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DOCUMENT AND ENTITY INFORMATION - shares	3 Months Ended
DOCUMENT AND ENTITY INFORMATION - shares	Oct. 31, 2016	Nov. 30, 2016
Entity Information [Line Items]
Entity Registrant Name	Nutanix, Inc.
Entity Central Index Key	0001618732
Current Fiscal Year End Date	--07-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Oct. 31, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Class A
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		17,100,500
Common Class B
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		125,156,937

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016
Current assets:
Cash and cash equivalents	$ 225,463	$ 99,209
Short-term investments	121,649	85,991
Accounts receivable—net	147,707	110,659
Deferred commissions—current	19,398	17,864
Prepaid expenses and other current assets	16,304	16,138
Total current assets	530,521	329,861
Property and equipment—net	46,328	42,218
Deferred commissions—non-current	22,125	19,029
Intangible assets—net	27,825	0
Goodwill	16,784	0
Other assets—non-current	4,680	7,978
Total assets	648,263	399,086
Current liabilities:
Accounts payable	57,308	52,111
Accrued compensation and benefits	28,352	24,547
Accrued expenses and other liabilities	6,591	5,537
Deferred revenue—current	165,833	130,569
Total current liabilities	258,084	212,764
Deferred revenue—non-current	209,598	165,896
Senior notes	0	73,260
Convertible preferred stock warrant liability	0	9,679
Early exercised stock options liability	1,874	2,320
Other liabilities—non-current	7,044	1,103
Total liabilities	476,600	465,022
Commitments and contingencies
Convertible preferred stock	0	310,379
Stockholders’ (deficit) equity:
Common stock	4	1
Additional paid-in capital	775,667	65,629
Accumulated other comprehensive loss	(20)	(12)
Accumulated deficit	(603,988)	(441,933)
Total stockholders’ (deficit) equity	171,663	(376,315)
Total liabilities, convertible preferred stock and stockholders’ (deficit) equity	$ 648,263	$ 399,086

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Revenue:
Product	$ 129,657	$ 70,396
Support and other services	37,152	17,360
Total revenue	166,809	87,756
Cost of revenue:
Product	52,210	27,657
Support and other services	17,552	7,422
Total cost of revenue	69,762	35,079
Gross profit	97,047	52,677
Operating expenses:
Sales and marketing	128,775	58,599
Research and development	75,281	23,857
General and administrative	29,372	7,375
Total operating expenses	233,428	89,831
Loss from operations	(136,381)	(37,154)
Other expense—net	(25,712)	(871)
Loss before provision for income taxes	(162,093)	(38,025)
Provision for income taxes	76	520
Net loss	$ (162,169)	$ (38,545)
Net loss per share attributable to common stockholders—basic and diluted (in dollars per share)	$ (2.18)	$ (0.90)
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic and diluted (in shares)	74,373,788	42,838,933

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (162,169)	$ (38,545)
Other comprehensive gain (loss)—net of tax:
Change in unrealized gain (loss) on available-for-sale securities, net of tax	(8)	25
Total other comprehensive gain (loss)—net of tax	(8)	25
Comprehensive loss	$ (162,177)	$ (38,520)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Cash flows from operating activities:
Net loss	$ (162,169)	$ (38,545)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	8,572	5,557
Stock-based compensation	90,728	5,386
Loss on debt extinguishment	3,320	0
Change in fair value of convertible preferred stock warrant liability	21,133	771
Other	369	(328)
Changes in operating assets and liabilities:
Accounts receivable—net	(36,213)	(8,816)
Deferred commission	(4,630)	(4,529)
Prepaid expenses and other assets	840	(419)
Accounts payable	5,052	(5,864)
Accrued compensation and benefits	3,518	(125)
Accrued expenses and other liabilities	682	763
Deferred revenue	72,958	40,533
Net cash (used in) provided by operating activities	4,160	(5,616)
Cash flows from investing activities:
Purchases of investments	(87,448)	(14,066)
Maturities of investments	19,950	15,225
Sales of investments	31,638	0
Payments for business acquisitions, net of cash acquired	(184)	0
Purchases of property and equipment	(11,915)	(9,642)
Net cash used in investing activities	(47,959)	(8,483)
Cash flows from financing activities:
Proceeds from initial public offering, net of underwriting discounts and commissions	254,455	0
Payments of offering costs	(2,243)	(803)
Proceeds from exercise of stock options, net of repurchases	1,472	1,298
Repayment of senior notes	(75,000)	0
Debt extinguishment costs	(1,580)	0
Payment of debt in conjunction with a business acquisition	(7,124)	0
Other	73	586
Net cash provided by financing activities	170,053	1,081
Net (decrease) increase in cash and cash equivalents	126,254	(13,018)
Cash and cash equivalents—beginning of period	99,209	67,879
Cash and cash equivalents—end of period	225,463	54,861
Supplemental disclosures of cash flow information:
Cash paid for income taxes	698	828
Cash paid for interest	1,271	0
Supplemental disclosures of non-cash investing and financing information:
Vesting of early exercised stock options	499	1,049
Purchases of property and equipment included in accounts payable	5,033	5,308
Offering costs included in accounts payable	367	1,772
Conversion of convertible preferred stock to common stock, net of issuance costs	310,379	0
Reclassification of convertible preferred stock warrant liability to additional paid-in capital	30,812	0
Issuance of common stock for business acquisitions	$ 27,063	$ 0

ORGANIZATION	3 Months Ended
ORGANIZATION	Oct. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION	ORGANIZATION Organization and Description of Business—Nutanix, Inc. was incorporated in the state of Delaware in September 2009. Nutanix, Inc. is headquartered in San Jose, California, and together with its wholly-owned subsidiaries (collectively, the “Company”) has operations throughout North America, Europe, Asia-Pacific, Middle East, Latin America and Africa. The Company’s enterprise cloud platform converges traditional silos of server, virtualization and storage into one integrated solution and can also connect to public cloud services. The Company primarily sells its products and services to end-customers through distributors and resellers (collectively “Partners”). During the three months ended October 31, 2016, the Company completed two acquisitions, Calm.io Pte. Ltd. ("Calm") and PernixData, Inc. ("PernixData") (see Note 3). Initial Public Offering—In October 2016, the Company completed its initial public offering (“IPO”) of Class A common stock, in which it sold 17,100,500 shares, including 2,230,500 shares pursuant to the underwriters’ over-allotment option. The shares were sold at an IPO price of $16.00 per share for net proceeds of $254.5 million, after deducting underwriting discounts and commissions of $19.2 million. Additionally, offering costs incurred by the Company totaled $5.1 million. Immediately prior to the closing of the Company’s IPO, all outstanding shares of common stock were reclassified as Class B common stock, and all outstanding shares of its convertible preferred stock automatically converted into 76,319,511 shares of common stock on a one-to-one basis and then reclassified as shares of Class B common stock. Following the IPO, the Company has two classes of authorized common stock, Class A common stock, which entitles holders to one vote per share, and Class B common stock which entitles holders to 10 votes per share.

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

3 Months Ended

Oct. 31, 2016

Accounting Policies [Abstract]

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation—The condensed consolidated financial statements, which include the accounts of Nutanix, Inc. and its wholly-owned subsidiaries including the acquisitions of Calm and PernixData, have been prepared in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”). All intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates—The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Such management estimates include, but are not limited to, the best estimate of selling prices for products and related support; determination of fair value of common stock and convertible preferred stock, fair value of stock options and convertible preferred stock warrant liability; accounting for income taxes, including the valuation reserve on deferred tax assets and uncertain tax positions; warranty liability; commissions expense; fair value of assets and liabilities acquired in business combinations; and contingencies and litigation. Management evaluates these estimates and assumptions on an ongoing basis using historical experience and other factors and makes adjustments when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could materially differ from those estimates and assumptions.

Concentration Risk:

Concentration of Revenue and Accounts Receivable—The Company sells its products primarily through Partners, including distributors and resellers, and occasionally directly to end-customers. For the three months ended October 31, 2015 and 2016, no end-customer accounted for 10% or more of total revenue.

For each significant Partner, revenue as a percentage of total revenue and accounts receivable as a percentage of total accounts receivable, net are as follows:



	Revenue for the Three Months Ended October 31,				Accounts Receivable as of
Customers	2015		2016		July 31, 2016		October 31, 2016
Partner A	19	%	16	%	*		12	%
Partner B	20	%	22	%	17	%	13	%
Partner C	*		15	%	12	%	*
Partner D	*		*		23	%	21	%
Partner E	*		*		11	%	11	%
Partner F	16	%	11	%	*		*

___________________


*	Less than 10%

Business Combinations—The Company accounts for its acquisitions using the acquisition method. Goodwill is measured at the acquisition date as the excess of the purchase price over the fair value of the assets acquired and liabilities assumed. Significant estimates and assumptions are made by management to value such assets and liabilities. Although the Company believes that those estimates and assumptions are reasonable and appropriate, they are inherently uncertain and subject to refinement. Additional information related to the acquisition date fair value of acquired assets and assumed liabilities obtained during the measurement period, not to exceed one year, may result in changes to the recorded values of such assets and liabilities, resulting in an offsetting adjustment to the goodwill associated with the business acquired.

Uncertain tax positions and tax-related valuation allowances are initially established in connection with a business combination as of the acquisition date. The Company continues to collect information and reevaluate these estimates and assumptions quarterly. The Company will record any adjustments to its preliminary estimates to goodwill provided that the Company is within the one year measurement period.

Any contingent consideration payable is recognized at fair value at the acquisition date. Liability-classified contingent consideration is remeasured each reporting period with changes in fair value recognized in earnings until the contingent consideration is settled.

Acquisition related costs incurred in connection with a business combination, other than those associated with the issuance of debt or equity securities, are expensed as incurred.

Goodwill, Intangible Assets and Impairment Assessment—Goodwill represents the excess of the purchase price over the fair value of the assets acquired and liabilities assumed, if any, in a business combination, and is allocated to the Company's single reporting unit. The Company reviews its goodwill for impairment at least annually, or whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. The Company may elect to utilize a qualitative assessment to determine whether it is more likely than not that the fair value of its reporting unit is less than its carrying value. If, after assessing the qualitative factors, the Company determines that it is more likely than not that the fair value of its reporting unit is less than its carrying value, the two-step impairment analysis will be performed. In the first step, to identify a potential impairment, the Company compares the fair value of its reporting unit with its carrying amount. If the carrying value of the reporting unit exceeds its fair value, the second step would need to be performed. In the second step, the Company compares the implied fair value of the reporting unit with its carrying amount. Any excess of the reporting unit carrying value over the respective implied fair value is recognized as an impairment loss.

Recently Adopted Accounting Pronouncement— In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Stock Compensation, which is intended to simplify several aspects of the accounting for share-based payment award transactions. ASU 2016-09 (i) requires all income tax effects of awards to be recognized in the income statement when the awards vest or are settled, (ii) requires classification of excess tax benefits as an operating activity in the statement of cash flows rather than a financing activity, (iii) eliminates the requirement to defer recognition of an excess tax benefit until the benefit is realized through a reduction to taxes payable, (iv) modifies statutory withholding tax requirements and (v) provides for a policy election to account for forfeitures as they occur. The Company early adopted ASU 2016-09 during the three months ended October 31, 2016. As a result of the adoption of ASU 2016-09, the Company recorded excess tax benefits prospectively in its provision for income taxes. Upon adoption, the Company recognized the previously unrecognized foreign excess tax benefits, which resulted in a cumulative effect adjustment of $0.1 million that reduced its accumulated deficit and increased its foreign deferred tax assets, using a modified retrospective transition method. The previously unrecognized U.S. excess tax benefits were recorded as a deferred tax asset, which was fully offset by a valuation allowance resulting in no impact to the accumulated deficit. Additionally, the Company elected to account for forfeitures as they occur using a modified retrospective transition method, which requires the Company to record cumulative-effect adjustment to accumulated deficit, and determined that the cumulative impact was immaterial. The Company is also required to present its excess tax benefits as a component of operating cash flows rather than financing cash flows on a prospective basis.

Recently Issued and Not Yet Adopted Accounting Pronouncements—In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. ASU 2016-18 will require the Company to present the change in the amounts described as restricted cash or restricted cash equivalents in the statement of cash flows. ASU 2016-18 is effective for the Company beginning August 1, 2018, with early adoption permitted. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated statement of cash flows.

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. ASU 2016-16 will require the Company to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. ASU 2016-16 is effective for the Company beginning August 1, 2018, with early adoption permitted. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This new standard will make eight targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. The new standard is effective for the Company beginning August 1, 2018. The new standard will require adoption on a retrospective basis unless it is impracticable to apply, in which case the Company would be required to apply the amendments prospectively as of the earliest date practicable. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases, which requires recognition of right-to-use lease assets and lease liabilities for all leases (with the exception of short-term leases) on the balance sheet of lessees. ASU 2016-02 is effective for the Company beginning August 1, 2019, including interim periods within those fiscal years, with early adoption permitted. This new standard requires a modified retrospective transition approach and provides certain optional transition relief. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The standard is a comprehensive new revenue recognition model that requires revenue to be recognized in a manner to depict the transfer of goods or services to a customer at an amount that reflects the consideration expected to be received in exchange for those goods or services. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers, to defer the effective date of ASU 2014-09 by one year, but permits entities to adopt the original effective date if they choose. In 2016, the FASB issued ASU 2016-08, ASU 2016-10 and ASU 2016-12 that provide interpretive clarifications on the new guidance in Topic 606. These updates in Topic 606 are effective for the Company beginning August 1, 2018. The Company is currently evaluating the impact that the adoption of these updates will have on its consolidated financial statements.

BUSINESS COMBINATIONS

3 Months Ended

Oct. 31, 2016

Business Combinations [Abstract]

BUSINESS COMBINATIONS

Calm Acquisition

On August 22, 2016, the Company completed the acquisition of all outstanding shares of Calm, a company based in Singapore which specializes in container and DevOps automation, for an aggregate purchase price of $7.7 million, net of cash acquired (the “Calm Acquisition”) . Consideration consisted of 528,517 shares of the Company’s common stock and $1.4 million of cash. The preliminary purchase price allocation includes $4.8 million of goodwill and $4.0 million of identifiable intangible assets, which primarily consist of developed technology, with an expected useful life of approximately 4.8 years. Goodwill represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired, and is not expected to be deductible for income tax purposes. The goodwill in this transaction is primarily attributable to the acquired workforce and expected operating synergies. The Company incurred approximately $0.6 million of acquisition costs related to the Calm Acquisition.

The results of operations of Calm are included in the results of the Company beginning on the date the acquisition was completed. Actual and pro forma results of operations have not been presented as the total amounts of revenue and net income are not material to the Company's consolidated results for the three months ended October 31, 2015 and October 31, 2016, respectively.

PernixData Acquisition

On September 6, 2016, the Company completed the acquisition of PernixData, a company based in the U.S., which specializes in scale-out data acceleration and analytics, for an aggregate purchase price of $23.0 million (the "PernixData Acquisition"). Total consideration consisted of 1,711,019 shares of the Company’s common stock and contingent consideration. Total potential contingent payments amount to $19.0 million, which may be payable over the next three years upon the achievement of certain operating milestones. Up to $7.5 million of the contingent payments are deemed to be part of the purchase price, which may be limited based on certain closing conditions, including PernixData's working capital upon completion of the acquisition. Up to $11.5 million of the payments also require future services to be provided to the Company by the related employees and will be recorded as compensation expense over the service period. The fair value of the contingent consideration considered to be part of the purchase price was $2.4 million as of the acquisition date, and is net of expected limitations of approximately $1.8 million due to closing conditions. The Company incurred approximately $0.7 million of acquisition costs related to the PernixData Acquisition.

As of the date of the acquisition, the preliminary purchase price allocation was as follows (in thousands):



Cash and cash equivalents	$	1,051
Accounts receivable	718
Goodwill	11,965
Intangible assets	24,270
Other assets	667
Deferred revenue	(6,007		)
Debt	(7,124		)
Other liabilities	(2,533		)
Total	$	23,007

Goodwill represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired and is not expected to be deductible for income tax purposes. The goodwill in this transaction is primarily attributable to the acquired workforce and expected operating synergies.

The acquired identifiable intangible assets consist of (dollars in thousands):



	Amount		Estimated Life (in years)
In-process R&D	$	16,100	—
Developed technology	3,570		5
Customer relationships	4,600		6
	$	24,270

In-process R&D will be tested for impairment at least annually, or whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable. Once the in-process R&D is completed, the Company will determine a useful life of the asset resulting from the completed in-process R&D and will begin amortizing the asset over its estimated useful life. Once completed, the useful life of the in-process R&D is expected to be approximately 5 to 7 years.

Unaudited Pro Forma Combined Consolidated Financial Information—The following unaudited pro forma combined consolidated financial information summarizes the combined results of operations of the Company and PernixData as though the PernixData Acquisition occurred on August 1, 2015. The unaudited pro forma combined consolidated financial information for all periods presented also included the business combination accounting effects resulting from this acquisition, including amortization charges from acquired intangible assets. The results of operations of PernixData are included in the results of the Company beginning on the date of the acquisition, and are not material.

The unaudited pro forma combined consolidated financial information is as follows (in thousands, except per share data):



	Three Months Ended October 31,
	2015			2016
Revenue	$	88,718		$	167,709
Net loss	(48,847		)	(163,081		)
Basic and diluted net loss per share	(1.10		)	(2.17		)

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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+ Details

FAIR VALUE MEASUREMENTS

3 Months Ended

Oct. 31, 2016

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

The fair value of the Company’s financial assets and liabilities measured on a recurring basis is as follows:



	As of July 31, 2016
	Level I		Level II		Level III		Total
	(In thousands)
Financial Assets:
Cash equivalents:
Money market funds	$	47,305	$	—	$	—	$	47,305
Commercial paper	—		4,999		—		4,999
Short-term investments:
Corporate bonds	—		64,360		—		64,360
Commercial paper	—		21,631		—		21,631
Total measured at fair value	47,305		90,990		—		138,295
Cash							46,905
Total cash, cash equivalents and short-term investments							$	185,200
Financial Liabilities:
Convertible preferred stock warrant liability	$	—	$	—	$	9,679	$	9,679



	As of October 31, 2016
	Level I		Level II		Level III		Total
	(In thousands)
Financial Assets:
Cash equivalents:
Money market funds	$	144,890	$	—	$	—	$	144,890
Commercial paper	—		22,582		—		22,582
Short-term investments:
Corporate bonds	—		80,225		—		80,225
Commercial paper	—		31,381		—		31,381
U.S. government securities	—		10,043		—		10,043
Total measured at fair value	$	144,890	$	144,231	$	—	289,121
Cash							57,991
Total cash, cash equivalents and short-term investments							$	347,112
Financial Liabilities:
Contingent consideration	$	—	$	—	$	2,557	$	2,557

A summary of the changes in the fair value of the Company’s convertible preferred stock warrant liability is as follows:



	Three Months Ended October 31,
	2015		2016
	(In thousands)
Convertible preferred stock warrant liability—beginning balance	$	11,683	$	9,679
Change in fair value*	771		21,133
Reclassification of unexercised warrants to additional paid-in capital upon the IPO	—		(30,812		)
Convertible preferred stock warrant liability—ending balance	$	12,454	$	—

______________


*	Recorded in the consolidated statements of operations within other expense—net.

A summary of the changes in the fair value of the Company’s contingent consideration is as follows:



	Three Months Ended October 31, 2016
	(In thousands)
Contingent consideration—beginning balance	$	—
Assumed in the PernixData Acquisition	2,371
Change in fair value*	186
Contingent consideration—ending balance	$	2,557

______________


*	Recorded in the consolidated statements of operations within general and administrative expenses

The Company measures the fair value of its Level 3 contingent consideration liability using the Monte Carlo simulation on projected future payments.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

BALANCE SHEET COMPONENTS

3 Months Ended

Oct. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BALANCE SHEET COMPONENTS

Short-Term Investments—The amortized cost of the Company’s short-term investments approximate their fair value. As of July 31, 2016 and October 31, 2016, unrealized gains or losses from the Company’s short-term investments were immaterial and there were no securities that were in an unrealized loss position for more than 12 months.

The following table summarizes the estimated fair value of the Company’s investments in marketable debt securities, by the contractual maturity date (in thousands):



	As of October 31, 2016
Due within 1 year	$	69,700
Due after 1 year through 3 years	51,949
Total	$	121,649

Property and Equipment—Net—Property and equipment, net consists of the following:



	Estimated Useful Life (In months)	As of
	Estimated Useful Life (In months)	July 31, 2016			October 31, 2016
		(In thousands)
Computer, production, engineering and other equipment	36	$	54,161		$	60,436
Demonstration units	12	33,184			37,149
Leasehold improvements	*	6,619			7,831
Furniture and fixtures	60	3,641			4,097
Total property and equipment—gross		97,605			109,513
Less accumulated depreciation and amortization		(55,387		)	(63,185		)
Total property and equipment—net		$	42,218		$	46,328

______________


*	Leasehold improvements are amortized over the shorter of the estimated useful lives of the improvements or the remaining lease term.

Depreciation and amortization expense related to the Company's property and equipment was $5.6 million and $8.2 million, respectively, for the three months ended October 31, 2015 and 2016.

Intangible Assets—Net—Intangible assets, net consists of the following:



	As of October 31, 2016
	(In thousands)
Indefinite-lived intangible asset:
In-process R&D	$	16,100
Finite-lived intangible assets:
Developed technology	7,300
Customer relationships	4,830
Total finite-lived intangible assets, gross	12,130
Total intangible assets, gross	28,230
Less:
Accumulated amortization of developed technology	(239		)
Accumulated amortization of customer relationships	(166		)
Total accumulated amortization	(405		)
Intangible assets, net	$	27,825

Changes in the net book value of intangible assets are as follows:



	Three Months Ended October 31, 2016
	(In thousands)
Intangible assets, net—beginning balance	$	—
Acquired in the Calm Acquisition	3,960
Acquired in the PernixData Acquisition	24,270
Amortization of intangible assets *	(405		)
Intangible assets, net—ending balance	$	27,825

______________


*	Represents amortization expense of finite-lived intangible assets recorded in the condensed consolidated statement of operations during the period within product cost of revenue and sales and marketing expenses.

Estimated future amortization expense of finite-lived intangible assets is as follows:



Year Ending July 31:	(In thousands)
2017 (remaining nine months)	$	1,823
2018	2,220
2019	2,201
2020	2,201
2021	2,201
Thereafter	1,079
Total	$	11,725

Accrued Compensation and Benefits—Accrued compensation and benefits consists of the following:



	As of
	July 31, 2016		October 31, 2016
	(In thousands)
Accrued commissions	$	14,203	$	14,599
Accrued vacation	3,490		4,203
Contributions to ESPP withheld	—		3,340
Accrued bonus	3,592		2,498
Other	3,262		3,712
Total accrued compensation and benefits	$	24,547	$	28,352

Accrued Expenses and Other Liabilities—Accrued expenses and other liabilities consists of the following:



	As of
	July 31, 2016		October 31, 2016
	(In thousands)
Accrued professional services	$	3,585	$	3,090
Income taxes payable	1,417		2,463
Other	535		1,038
Total accrued expenses and other liabilities	$	5,537	$	6,591

DEBT	3 Months Ended
DEBT	Oct. 31, 2016
Debt Disclosure [Abstract]
DEBT	DEBT Senior Notes—In April 2016, the Company issued an aggregate principal amount of $75.0 million of senior notes due on April 15, 2019 (the “Senior Notes”) to a lender. The Senior Notes contained a guaranteed minimum return to the holder of the Senior Notes (the “Guaranteed Minimum Return”). In September 2016, the Company fully repaid all outstanding principal balance of the Senior Notes and incurred approximately $3.3 million of loss on debt extinguishment, which consisted of $1.7 million of unamortized debt issuance costs and $1.6 million of debt extinguishment costs primarily related to the Guaranteed Minimum Return.

COMMITMENTS AND CONTINGENCIES

3 Months Ended

Oct. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

Operating Leases—The Company has commitments for future payments related to its office facility leases and other contractual obligations. The Company leases its office facilities under non-cancelable operating lease agreements expiring through the year ending 2021. Certain of these lease agreements have free or escalating rent payments. The Company recognizes rent expense under such agreements on a straight-line basis over the lease term, with any free or escalating rent payments amortized as a reduction or addition of rent expense over the lease term.

Future minimum payments due under operating leases as of October 31, 2016 are as follows:



Year Ending July 31:	(In thousands)
2017 (remaining nine months)	$	7,398
2018	9,762
2019	10,524
2020	10,078
2021	7,212
Thereafter	2,840
Total	$	47,814

Rent expense incurred under operating leases was $1.4 million and $2.9 million for the three months ended October 31, 2015 and 2016, respectively.

Purchase Commitments—In the normal course of business, the Company makes commitments with its third-party hardware contract manufacturers to manufacture its inventories and non-standard components based on its forecasts. These commitments consist of obligations for on-hand inventories and non-cancellable purchase orders for non-standard components. The Company records a charge for firm, non-cancellable and unconditional purchase commitments with its third-party hardware contract manufacturers for non-standard components when and if quantities exceed its future demand forecasts through a charge to cost of product sales. As of October 31, 2016, the Company had approximately $19.5 million of non-cancellable purchase commitments pertaining to its normal operations, and approximately $19.8 million of other purchase obligations with its contract manufacturers.

Guarantees— The Company has entered into agreements with some of its Partners and customers that contain indemnification provisions in the event of claims alleging that the Company’s products infringe the intellectual property rights of a third party. The scope of such indemnification varies, and may include, in certain cases, the ability to cure the indemnification by modifying or replacing the product at the Company’s own expense, requiring the return and refund of the infringing product, procuring the right for the partner and/or customer to continue to use or distribute the product, as applicable, and/or defending the partner or customer against and paying any damages from third party actions based upon claims of infringement. Other guarantees or indemnification arrangements include guarantees of product and service performance. The fair value of liabilities related to indemnifications and guarantee provisions are not material and have not had any material impact on the consolidated financial statements to date.

Litigation — From time to time, the Company may become involved in various litigation and administrative proceedings relating to claims arising from its operations in the normal course of business. Management is not currently aware of any matters that may have a material adverse impact on the Company’s business, financial position, results of operations or cash flows.

CONVERTIBLE PREFERRED STOCK WARRANTS

3 Months Ended

Oct. 31, 2016

Other Liabilities Disclosure [Abstract]

CONVERTIBLE PREFERRED STOCK WARRANTS

The Convertible Preferred Stock Warrants outstanding were as follows (in thousands, except for share and per share amounts):



						Fair Value as of
Class of Shares	Issuance Date	Contractual Term	Number of Shares	Exercise Price per Share		July 31, 2016			IPO Date(1)
Series A warrants	December 21, 2009	10 years	683,644	$	0.234	$	8,259		$	25,883
Series A warrants	May 10, 2010	10 years	85,450	0.234		1,032			3,235
Series D warrants	November 26, 2013	10 years	10,000	7.289		77			308
Series D warrants	December 12, 2013	7 years	45,000	7.289		311			1,386
			824,094			$	9,679	(2)	$	30,812

______________


(1)	Immediately prior to the closing of the Company’s IPO.

(2) Reflected in the consolidated balance sheets as convertible preferred stock warrant liability.

Immediately prior to the closing of the Company’s IPO, all outstanding convertible preferred stock warrants automatically converted to common stock warrants, and then were reclassified as Class B common stock warrants. As a result of the automatic conversion of the convertible preferred stock warrants to Class B common stock warrants, the Company revalued the convertible preferred stock warrants as of the completion of the IPO and reclassified the outstanding preferred stock warrant liability balance to additional paid-in capital with no further remeasurements as the common stock warrants are now deemed permanent equity. During the three months ended October 31, 2016, 55,000 Class B common stock warrants were exercised. As a result, the Company issued 46,529 shares of Class B common stock as the contracts allow a net share settlement for Class B common stock. As of October 31, 2016, there were 769,094 Class B common stock warrants outstanding.

CONVERTIBLE PREFERRED STOCK

3 Months Ended

Oct. 31, 2016

Temporary Equity Disclosure [Abstract]

CONVERTIBLE PREFERRED STOCK

Series A Convertible Preferred Stock, Series B Convertible Preferred Stock, Series C Convertible Preferred Stock, Series D Convertible Preferred Stock and Series E Convertible Preferred Stock (collectively the “Convertible Preferred Stock”) outstanding consisted of the following as of July 31, 2016 and as of immediately prior to the automatic conversion of the Convertible Preferred Stock into Class B common stock:



	Shares Authorized	Shares Issued and Outstanding	Aggregate Liquidation Preference
			(In thousands)
Series A	28,165,300	27,396,198	$	15,494
Series B	16,558,441	16,558,441	25,250
Series C	7,683,710	7,683,710	33,000
Series D	13,912,438	13,857,438	151,500
Series E	11,943,420	10,823,724	145,000
	78,263,309	76,319,511	$	370,244

Immediately prior to the closing of the Company’s IPO, all shares of the Company’s then-outstanding Convertible Preferred Stock, as shown in the table above, automatically converted on a one-for-one basis into an aggregate of 76,319,511 shares of common stock, which were then reclassified into Class B common stock.

STOCKHOLDERS’ EQUITY	3 Months Ended
STOCKHOLDERS’ EQUITY	Oct. 31, 2016
Equity [Abstract]
STOCKHOLDERS’ EQUITY	STOCKHOLDERS’ EQUITY Preferred Stock Immediately prior to the closing of the Company's IPO, the Company filed an Amended and Restated Certificate of Incorporation, which authorized the issuance of undesignated preferred stock with rights and preferences, including voting rights, designated from time to time by the Company's Board of Directors (the "Board"). As of October 31, 2016, there were 200,000,000 shares of preferred stock authorized with a par value of $0.000025 and no shares of preferred stock issued and outstanding. Common Stock In connection with the IPO, the Company established two classes of authorized common stock, Class A common stock and Class B common stock. All shares of common stock outstanding immediately prior to the IPO, including shares of common stock issued upon the conversion of the Convertible Preferred Stock, were converted into an equivalent number of shares of Class B common stock. As of October 31, 2016, the Company had 1,000,000,000 shares of Class A common stock authorized with a par value of $0.000025 per share and 200,000,000 shares of Class B common stock authorized with a par value of $0.000025 per share. As of October 31, 2016, 17,100,500 shares of Class A common stock were issued and outstanding and 125,145,728 shares of Class B common stock were issued and outstanding. Holders of Class A common stock are entitled to one vote for each share of Class A common stock held on all matters submitted to a vote of stockholders and holders of Class B common stock are entitled to ten votes for each share of Class B common stock held on all matters submitted to a vote of stockholders. Except with respect to voting, the rights of the holders of Class A and Class B common stock are identical. Shares of Class B common stock are voluntarily convertible into shares of Class A common stock at the option of the holder and generally automatically convert into shares of our Class A common stock upon a transfer.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 4
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
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-Section 50
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e))
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Topic 210
-SubTopic 10
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section S99
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

EQUITY AWARD PLANS

3 Months Ended

Oct. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

EQUITY AWARD PLANS

Stock Plans—In June 2010, the Company adopted the 2010 Stock Plan (“2010 Plan”), and in December 2011, the Company adopted the 2011 Stock Plan (“2011 Plan”). In December 2015, the Board adopted the 2016 Equity Incentive Plan (“2016 Plan” and together with the 2010 Plan and 2011 Plan, the “Stock Plans”), which was amended in September 2016. The Company’s stockholders approved the 2016 Plan in March 2016 and it became effective in connection with the Company’s IPO. As a result, upon the IPO, the Company ceased granting additional stock awards under the 2010 Plan and 2011 Plan and the 2010 Plan and 2011 Plan terminated. Any outstanding stock awards under the 2010 Plan and 2011 Plan will remain outstanding, subject to the terms of the applicable plan and award agreements, until such shares are issued under those stock awards, by exercise of stock options or settlement of RSUs, or until those stock awards become vested or expired by their terms. Under the 2016 Plan, the Company may grant incentive stock options (“ISO”), non-statutory stock options (“NSO”), restricted stock (“RS”), restricted stock units (“RSU”) and stock appreciation rights (“SAR”) to employees, directors and consultants. The Company has initially reserved 22,400,000 shares of the Company’s Class A common stock for issuance under the 2016 Plan. The number of shares of Class A common stock available for issuance under the 2016 Plan will also include an annual increase on the first day of each fiscal year beginning in fiscal year 2018, equal to the least of: 18,000,000 shares, 5% of the outstanding shares of classes of common stock as of the last day of the Company’s immediately preceding fiscal year, or such other amount as may be determined by the Company’s board of directors. In addition, up to a maximum of 38,667,284 shares of Class B common stock returned to the 2010 Plan and 2011 Plan as the result of expiration or termination of awards after the IPO will also become available for issuance under the 2016 Plan. As of October 31, 2016, the Company had reserved a total of 81,873,371 shares for the issuance of equity awards under the Stock Plans, of which 22,661,656 shares were still available for grant.

Restricted Stock Units

Performance RSUs. The Company grants RSUs that contain both service and performance conditions to its executives and employees. Vesting of the Performance RSUs is subject to continuous service with the Company and satisfaction of certain liquidity events of the Company, including the expiration of a lock-up period established in connection with the IPO, or both certain liquidity events and specified performance targets (collectively, the “Performance RSUs”). While the Company recognizes cumulative stock-based compensation expense for the portion of the awards for which the service condition has been satisfied when it is probable that the performance conditions will be met, vesting and settlement of the Performance RSUs are subject to the performance conditions actually being met. During the three months ended October 31, 2016, the Company began to recognize the Performance RSUs as the satisfaction of the performance conditions for vesting became probable.

The Company’s summary of Performance RSUs activity under the Stock Plan is as follows:



	Number of Shares		Grant Date Fair Value per Share
Outstanding—July 31, 2016	12,265,369		$	13.23
Granted	3,340,762		10.18
Canceled/forfeited	(127,569	)	12.75
Outstanding—October 31, 2016	15,478,562		12.58

Offer to Exchange Stock Options for RSUs (the “Tender Offer”). In July 2016, the Company approved a tender offer stock option exchange program under which outstanding employee stock options with exercise prices of $8.41 or greater per share could be exchanged for a specified number of Performance RSUs based on a predetermined exchange ratio granted with a new vesting period. As a result of the Tender Offer, on August 16, 2016, stock options to purchase 1,361,317 common shares were cancelled and, in exchange, the Company granted 911,489 Performance RSUs to eligible employees. The Tender Offer resulted in a total incremental stock-based compensation expense of approximately $3.4 million.

Employee Stock Purchase Plan—In December 2015, the Board adopted the 2016 Employee Stock Purchase Plan, which was subsequently amended in January 2016 and September 2016 and approved by the Company’s stockholders in March 2016 (the “2016 ESPP”). The ESPP became effective in connection with the Company’s IPO. A total of 3,800,000 shares of Class A common stock were initially reserved for issuance under the 2016 ESPP. The number of shares of Class A common stock available for sale under the 2016 ESPP will also include an annual increase on the first day of each fiscal year beginning in fiscal 2018, equal to the least of: 3,800,000 shares, 1% of the outstanding shares of classes of common stock as of the last day of the Company’s immediately preceding fiscal year, or such other amount as may be determined by the Company’s board of directors.

The 2016 ESPP allows eligible employees to purchase shares of the Company’s Class A common stock at a discount through payroll deductions of up to 15% of eligible compensation, subject to caps of $25,000 in any calendar year and 1,000 shares on any purchase date. The 2016 ESPP provides for 12-month offering periods generally beginning March and September of each year, and each offering period consists of two six-month purchase periods. The initial offering period began in September 2016 and will end in September 2017.

On each purchase date, participating employees will purchase Class A common stock at a price per share equal to 85% of the lesser of the fair market value of the Company’s common stock on (i) the first trading day of the applicable offering period and (2) the last trading day of each purchase period in the applicable offering period. If the stock price of the Company's Class A common stock on any purchase date in an offering period is lower than the stock price on the enrollment date of that offering period, the offering period will immediately reset after the purchase of shares on such purchase date and automatically roll into a new offering period.

For the first offering period, which began on September 30, 2016, the fair market value of the common stock used for the first offering period was $16, the IPO price of the Company’s Class A common stock.

The Company uses the Black-Scholes option-pricing model to determine the fair value of shares purchased under the 2016 ESPP with the following weighted average assumptions on the date of the grant (on October 11, 2016):



	Three Months Ended October 31, 2016
Expected term (in years)	0.75
Risk-free interest rate	0.6	%
Volatility	50.6	%
Dividend yield	—	%

Stock-Based Compensation —Total stock-based compensation expense recognized for stock awards in the consolidated statements of operations is as follows:



	Three Months Ended October 31,
	2015		2016
	(In thousands)
Cost of revenue:
Product	$	109	$	966
Support and other services	293		3,350
Sales and marketing	2,118		33,891
Research and development	1,629		34,026
General and administrative	1,237		18,495
Total stock-based compensation expense	$	5,386	$	90,728

Total stock-based compensation expense recognized for stock awards in the consolidated statements of operations by type of awards is as follows:



	Three Months Ended October 31,
	2015		2016
	(In thousands)
RSUs *	$	—	$	82,331
Stock options *	5,386		5,892
ESPP	—		2,505
Total stock-based compensation expense	$	5,386	$	90,728

_____________


*	Includes stock-compensation expense related to stock awards with performance conditions, which vesting was deemed probable as of October 31, 2016.

As of October 31, 2016, unrecognized stock-based compensation expense related to the outstanding stock awards was approximately $193.9 million and is expected to be recognized over a weighted-average period of approximately 1.7 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

INCOME TAXES	3 Months Ended
INCOME TAXES	Oct. 31, 2016
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES During the three months ended October 31, 2016, the income tax provision of $0.1 million primarily consisted of foreign taxes on the Company's international operations and U.S. state income taxes, offset by the partial release of $1.5 million of the U.S. valuation allowance in connection with the PernixData Acquisition and tax benefit related to the early adoption of ASU 2016-09. The net deferred tax liability recorded in connection with the PernixData Acquisition provided an additional source of taxable income to support the realizability of the pre-existing deferred tax assets and as a result, the Company released a portion of the U.S. valuation allowance. During the three months ended October 31, 2015, the income tax provision of $0.5 million primarily consisted of foreign taxes on our international operations and state income taxes in the U.S.

NET LOSS PER SHARE

3 Months Ended

Oct. 31, 2016

Earnings Per Share [Abstract]

NET LOSS PER SHARE

The computation of basic and diluted net loss per share is as follows (in thousands, except share and per share data):



	Three Months Ended October 31,
	2015			2016
Numerator:
Net loss	$	(38,545	)	$	(162,169	)
Denominator:
Weighted-average shares—basic and diluted	42,838,933			74,373,788
Net loss per share attributable to common stockholders—basic and diluted	$	(0.90	)	$	(2.18	)

The weighted-average potential shares of common stock that were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been anti-dilutive are as follows:



	Three Months Ended October 31,
	2015	2016
Stock awards	34,003,653	40,764,842
Common stock subject to repurchase	2,192,005	727,254
Common stock warrants	—	769,094
Convertible preferred stock	76,319,511	—
Convertible preferred stock warrants	824,094	—
Total	113,339,263	42,261,190

SEGMENT INFORMATION

3 Months Ended

Oct. 31, 2016

Segment Reporting [Abstract]

SEGMENT INFORMATION

The following table sets forth revenue by geographic area based on bill-to location:



	Three Months Ended October, 31
	2015		2016
	(In thousands)
U.S.	$	56,728	$	102,871
Europe, the Middle East and Africa	16,361		24,248
Asia-Pacific	11,154		28,908
Other Americas	3,513		10,782
Total revenue	$	87,756	$	166,809

As of July 31, 2016 and October 31, 2016, $30.0 million and $54.7 million, respectively, of the Company’s long-lived assets, net were located in the U.S.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 42
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-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Paragraph 29
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

RELATED PARTY TRANSACTIONS	3 Months Ended
RELATED PARTY TRANSACTIONS	Oct. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS The Company enters into various transactions with its related parties in the normal course of business. During the three months ended October 31, 2015 and 2016, the Company’s purchases of goods or services from related parties totaled $0.4 million and $0.2 million, respectively. Amounts payable to related parties as of October 31, 2016 were $0.2 million. Revenue from related parties for the three months ended October 31, 2015 and 2016 were $0.2 million and $0.1 million, respectively. The Company did not have any receivables outstanding from related parties as of July 31, 2016 and October 31, 2016, respectively. In connection with the PernixData Acquisition (see Note 3), entities affiliated with Lightspeed Venture Partners, which owned approximately 36.7% of the Company’s outstanding Convertible Preferred Stock as of July 31, 2016, owned approximately 26.4% of the outstanding capital stock of PernixData immediately prior to the completion of the PernixData Acquisition. These entities received 625,478 shares of the Company’s common stock in the PernixData Acquisition, as well as the right to receive up to approximately $2.7 million in cash in the event the contingent consideration becomes payable. Two members of the Company’s board of directors are affiliated with Lightspeed Venture Partners.

SUBSEQUENT EVENTS	3 Months Ended
SUBSEQUENT EVENTS	Oct. 31, 2016
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS In November 2016, the Company granted 4,035,428 RSUs to its employees with a weighted-average fair value of $30.45 per share.

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Oct. 31, 2016
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation—The condensed consolidated financial statements, which include the accounts of Nutanix, Inc. and its wholly-owned subsidiaries including the acquisitions of Calm and PernixData, have been prepared in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”). All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates—The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Such management estimates include, but are not limited to, the best estimate of selling prices for products and related support; determination of fair value of common stock and convertible preferred stock, fair value of stock options and convertible preferred stock warrant liability; accounting for income taxes, including the valuation reserve on deferred tax assets and uncertain tax positions; warranty liability; commissions expense; fair value of assets and liabilities acquired in business combinations; and contingencies and litigation. Management evaluates these estimates and assumptions on an ongoing basis using historical experience and other factors and makes adjustments when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could materially differ from those estimates and assumptions.
Concentration Risk	Concentration Risk: Concentration of Revenue and Accounts Receivable—The Company sells its products primarily through Partners, including distributors and resellers, and occasionally directly to end-customers.
Business Combination	Business Combinations—The Company accounts for its acquisitions using the acquisition method. Goodwill is measured at the acquisition date as the excess of the purchase price over the fair value of the assets acquired and liabilities assumed. Significant estimates and assumptions are made by management to value such assets and liabilities. Although the Company believes that those estimates and assumptions are reasonable and appropriate, they are inherently uncertain and subject to refinement. Additional information related to the acquisition date fair value of acquired assets and assumed liabilities obtained during the measurement period, not to exceed one year, may result in changes to the recorded values of such assets and liabilities, resulting in an offsetting adjustment to the goodwill associated with the business acquired. Uncertain tax positions and tax-related valuation allowances are initially established in connection with a business combination as of the acquisition date. The Company continues to collect information and reevaluate these estimates and assumptions quarterly. The Company will record any adjustments to its preliminary estimates to goodwill provided that the Company is within the one year measurement period. Any contingent consideration payable is recognized at fair value at the acquisition date. Liability-classified contingent consideration is remeasured each reporting period with changes in fair value recognized in earnings until the contingent consideration is settled. Acquisition related costs incurred in connection with a business combination, other than those associated with the issuance of debt or equity securities, are expensed as incurred.
Goodwill and Intangible Asset Assessment	Goodwill, Intangible Assets and Impairment Assessment—Goodwill represents the excess of the purchase price over the fair value of the assets acquired and liabilities assumed, if any, in a business combination, and is allocated to the Company's single reporting unit. The Company reviews its goodwill for impairment at least annually, or whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. The Company may elect to utilize a qualitative assessment to determine whether it is more likely than not that the fair value of its reporting unit is less than its carrying value. If, after assessing the qualitative factors, the Company determines that it is more likely than not that the fair value of its reporting unit is less than its carrying value, the two-step impairment analysis will be performed. In the first step, to identify a potential impairment, the Company compares the fair value of its reporting unit with its carrying amount. If the carrying value of the reporting unit exceeds its fair value, the second step would need to be performed. In the second step, the Company compares the implied fair value of the reporting unit with its carrying amount. Any excess of the reporting unit carrying value over the respective implied fair value is recognized as an impairment loss.
Recently Issued and Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncement— In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Stock Compensation, which is intended to simplify several aspects of the accounting for share-based payment award transactions. ASU 2016-09 (i) requires all income tax effects of awards to be recognized in the income statement when the awards vest or are settled, (ii) requires classification of excess tax benefits as an operating activity in the statement of cash flows rather than a financing activity, (iii) eliminates the requirement to defer recognition of an excess tax benefit until the benefit is realized through a reduction to taxes payable, (iv) modifies statutory withholding tax requirements and (v) provides for a policy election to account for forfeitures as they occur. The Company early adopted ASU 2016-09 during the three months ended October 31, 2016. As a result of the adoption of ASU 2016-09, the Company recorded excess tax benefits prospectively in its provision for income taxes. Upon adoption, the Company recognized the previously unrecognized foreign excess tax benefits, which resulted in a cumulative effect adjustment of $0.1 million that reduced its accumulated deficit and increased its foreign deferred tax assets, using a modified retrospective transition method. The previously unrecognized U.S. excess tax benefits were recorded as a deferred tax asset, which was fully offset by a valuation allowance resulting in no impact to the accumulated deficit. Additionally, the Company elected to account for forfeitures as they occur using a modified retrospective transition method, which requires the Company to record cumulative-effect adjustment to accumulated deficit, and determined that the cumulative impact was immaterial. The Company is also required to present its excess tax benefits as a component of operating cash flows rather than financing cash flows on a prospective basis. Recently Issued and Not Yet Adopted Accounting Pronouncements—In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. ASU 2016-18 will require the Company to present the change in the amounts described as restricted cash or restricted cash equivalents in the statement of cash flows. ASU 2016-18 is effective for the Company beginning August 1, 2018, with early adoption permitted. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated statement of cash flows. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. ASU 2016-16 will require the Company to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. ASU 2016-16 is effective for the Company beginning August 1, 2018, with early adoption permitted. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This new standard will make eight targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. The new standard is effective for the Company beginning August 1, 2018. The new standard will require adoption on a retrospective basis unless it is impracticable to apply, in which case the Company would be required to apply the amendments prospectively as of the earliest date practicable. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases, which requires recognition of right-to-use lease assets and lease liabilities for all leases (with the exception of short-term leases) on the balance sheet of lessees. ASU 2016-02 is effective for the Company beginning August 1, 2019, including interim periods within those fiscal years, with early adoption permitted. This new standard requires a modified retrospective transition approach and provides certain optional transition relief. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The standard is a comprehensive new revenue recognition model that requires revenue to be recognized in a manner to depict the transfer of goods or services to a customer at an amount that reflects the consideration expected to be received in exchange for those goods or services. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers, to defer the effective date of ASU 2014-09 by one year, but permits entities to adopt the original effective date if they choose. In 2016, the FASB issued ASU 2016-08, ASU 2016-10 and ASU 2016-12 that provide interpretive clarifications on the new guidance in Topic 606. These updates in Topic 606 are effective for the Company beginning August 1, 2018. The Company is currently evaluating the impact that the adoption of these updates will have on its consolidated financial statements.

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

Oct. 31, 2016

Accounting Policies [Abstract]

Schedules of Concentration of Revenue and Accounts Receivable

For each significant Partner, revenue as a percentage of total revenue and accounts receivable as a percentage of total accounts receivable, net are as follows:



	Revenue for the Three Months Ended October 31,				Accounts Receivable as of
Customers	2015		2016		July 31, 2016		October 31, 2016
Partner A	19	%	16	%	*		12	%
Partner B	20	%	22	%	17	%	13	%
Partner C	*		15	%	12	%	*
Partner D	*		*		23	%	21	%
Partner E	*		*		11	%	11	%
Partner F	16	%	11	%	*		*

___________________


*	Less than 10%

BUSINESS COMBINATIONS (Tables)

3 Months Ended

Oct. 31, 2016

Business Combinations [Abstract]

Schedule of Preliminary Purchase Price Allocation

As of the date of the acquisition, the preliminary purchase price allocation was as follows (in thousands):



Cash and cash equivalents	$	1,051
Accounts receivable	718
Goodwill	11,965
Intangible assets	24,270
Other assets	667
Deferred revenue	(6,007		)
Debt	(7,124		)
Other liabilities	(2,533		)
Total	$	23,007

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

The acquired identifiable intangible assets consist of (dollars in thousands):



	Amount		Estimated Life (in years)
In-process R&D	$	16,100	—
Developed technology	3,570		5
Customer relationships	4,600		6
	$	24,270

Schedule of Pro Forma Combined Consolidated Financial Information

The unaudited pro forma combined consolidated financial information is as follows (in thousands, except per share data):



	Three Months Ended October 31,
	2015			2016
Revenue	$	88,718		$	167,709
Net loss	(48,847		)	(163,081		)
Basic and diluted net loss per share	(1.10		)	(2.17		)

FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Oct. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities Measured on Recurring Basis

The fair value of the Company’s financial assets and liabilities measured on a recurring basis is as follows:



	As of July 31, 2016
	Level I		Level II		Level III		Total
	(In thousands)
Financial Assets:
Cash equivalents:
Money market funds	$	47,305	$	—	$	—	$	47,305
Commercial paper	—		4,999		—		4,999
Short-term investments:
Corporate bonds	—		64,360		—		64,360
Commercial paper	—		21,631		—		21,631
Total measured at fair value	47,305		90,990		—		138,295
Cash							46,905
Total cash, cash equivalents and short-term investments							$	185,200
Financial Liabilities:
Convertible preferred stock warrant liability	$	—	$	—	$	9,679	$	9,679



	As of October 31, 2016
	Level I		Level II		Level III		Total
	(In thousands)
Financial Assets:
Cash equivalents:
Money market funds	$	144,890	$	—	$	—	$	144,890
Commercial paper	—		22,582		—		22,582
Short-term investments:
Corporate bonds	—		80,225		—		80,225
Commercial paper	—		31,381		—		31,381
U.S. government securities	—		10,043		—		10,043
Total measured at fair value	$	144,890	$	144,231	$	—	289,121
Cash							57,991
Total cash, cash equivalents and short-term investments							$	347,112
Financial Liabilities:
Contingent consideration	$	—	$	—	$	2,557	$	2,557

Summary of Changes in Fair Value of Convertible Preferred Stock Warrant Liability

A summary of the changes in the fair value of the Company’s convertible preferred stock warrant liability is as follows:



	Three Months Ended October 31,
	2015		2016
	(In thousands)
Convertible preferred stock warrant liability—beginning balance	$	11,683	$	9,679
Change in fair value*	771		21,133
Reclassification of unexercised warrants to additional paid-in capital upon the IPO	—		(30,812		)
Convertible preferred stock warrant liability—ending balance	$	12,454	$	—

______________


*	Recorded in the consolidated statements of operations within other expense—net.

A summary of the changes in the fair value of the Company’s contingent consideration is as follows:



	Three Months Ended October 31, 2016
	(In thousands)
Contingent consideration—beginning balance	$	—
Assumed in the PernixData Acquisition	2,371
Change in fair value*	186
Contingent consideration—ending balance	$	2,557

______________


*	Recorded in the consolidated statements of operations within general and administrative expenses

BALANCE SHEET COMPONENTS (Tables)

3 Months Ended

Oct. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Investments in Marketable Debt Securities, by Contractual Maturity Date

The following table summarizes the estimated fair value of the Company’s investments in marketable debt securities, by the contractual maturity date (in thousands):



	As of October 31, 2016
Due within 1 year	$	69,700
Due after 1 year through 3 years	51,949
Total	$	121,649

Schedule of Property, Plant and Equipment

Property and Equipment—Net—Property and equipment, net consists of the following:



	Estimated Useful Life (In months)	As of
	Estimated Useful Life (In months)	July 31, 2016			October 31, 2016
		(In thousands)
Computer, production, engineering and other equipment	36	$	54,161		$	60,436
Demonstration units	12	33,184			37,149
Leasehold improvements	*	6,619			7,831
Furniture and fixtures	60	3,641			4,097
Total property and equipment—gross		97,605			109,513
Less accumulated depreciation and amortization		(55,387		)	(63,185		)
Total property and equipment—net		$	42,218		$	46,328

______________


*	Leasehold improvements are amortized over the shorter of the estimated useful lives of the improvements or the remaining lease term.

Schedule of Finite-Lived Intangible Assets

Intangible Assets—Net—Intangible assets, net consists of the following:



	As of October 31, 2016
	(In thousands)
Indefinite-lived intangible asset:
In-process R&D	$	16,100
Finite-lived intangible assets:
Developed technology	7,300
Customer relationships	4,830
Total finite-lived intangible assets, gross	12,130
Total intangible assets, gross	28,230
Less:
Accumulated amortization of developed technology	(239		)
Accumulated amortization of customer relationships	(166		)
Total accumulated amortization	(405		)
Intangible assets, net	$	27,825

Changes in the net book value of intangible assets are as follows:



	Three Months Ended October 31, 2016
	(In thousands)
Intangible assets, net—beginning balance	$	—
Acquired in the Calm Acquisition	3,960
Acquired in the PernixData Acquisition	24,270
Amortization of intangible assets *	(405		)
Intangible assets, net—ending balance	$	27,825

______________


*	Represents amortization expense of finite-lived intangible assets recorded in the condensed consolidated statement of operations during the period within product cost of revenue and sales and marketing expenses.

Schedule of Indefinite-Lived Intangible Assets

Intangible Assets—Net—Intangible assets, net consists of the following:



	As of October 31, 2016
	(In thousands)
Indefinite-lived intangible asset:
In-process R&D	$	16,100
Finite-lived intangible assets:
Developed technology	7,300
Customer relationships	4,830
Total finite-lived intangible assets, gross	12,130
Total intangible assets, gross	28,230
Less:
Accumulated amortization of developed technology	(239		)
Accumulated amortization of customer relationships	(166		)
Total accumulated amortization	(405		)
Intangible assets, net	$	27,825

Changes in the net book value of intangible assets are as follows:



	Three Months Ended October 31, 2016
	(In thousands)
Intangible assets, net—beginning balance	$	—
Acquired in the Calm Acquisition	3,960
Acquired in the PernixData Acquisition	24,270
Amortization of intangible assets *	(405		)
Intangible assets, net—ending balance	$	27,825

______________


*	Represents amortization expense of finite-lived intangible assets recorded in the condensed consolidated statement of operations during the period within product cost of revenue and sales and marketing expenses.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Estimated future amortization expense of finite-lived intangible assets is as follows:



Year Ending July 31:	(In thousands)
2017 (remaining nine months)	$	1,823
2018	2,220
2019	2,201
2020	2,201
2021	2,201
Thereafter	1,079
Total	$	11,725

Schedule of Accrued Liabilities

Accrued Compensation and Benefits—Accrued compensation and benefits consists of the following:



	As of
	July 31, 2016		October 31, 2016
	(In thousands)
Accrued commissions	$	14,203	$	14,599
Accrued vacation	3,490		4,203
Contributions to ESPP withheld	—		3,340
Accrued bonus	3,592		2,498
Other	3,262		3,712
Total accrued compensation and benefits	$	24,547	$	28,352

Accrued Expenses and Other Liabilities—Accrued expenses and other liabilities consists of the following:



	As of
	July 31, 2016		October 31, 2016
	(In thousands)
Accrued professional services	$	3,585	$	3,090
Income taxes payable	1,417		2,463
Other	535		1,038
Total accrued expenses and other liabilities	$	5,537	$	6,591

COMMITMENTS AND CONTINGENCIES (Tables)

3 Months Ended

Oct. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Payments Due Under Operating Leases

Future minimum payments due under operating leases as of October 31, 2016 are as follows:



Year Ending July 31:	(In thousands)
2017 (remaining nine months)	$	7,398
2018	9,762
2019	10,524
2020	10,078
2021	7,212
Thereafter	2,840
Total	$	47,814

- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

+ References + Details

CONVERTIBLE PREFERRED STOCK WARRANTS (Tables)

3 Months Ended

Oct. 31, 2016

Other Liabilities Disclosure [Abstract]

Schedule of Convertible Preferred Stock Warrants

The Convertible Preferred Stock Warrants outstanding were as follows (in thousands, except for share and per share amounts):



						Fair Value as of
Class of Shares	Issuance Date	Contractual Term	Number of Shares	Exercise Price per Share		July 31, 2016			IPO Date(1)
Series A warrants	December 21, 2009	10 years	683,644	$	0.234	$	8,259		$	25,883
Series A warrants	May 10, 2010	10 years	85,450	0.234		1,032			3,235
Series D warrants	November 26, 2013	10 years	10,000	7.289		77			308
Series D warrants	December 12, 2013	7 years	45,000	7.289		311			1,386
			824,094			$	9,679	(2)	$	30,812

______________


(1)	Immediately prior to the closing of the Company’s IPO.

(2) Reflected in the consolidated balance sheets as convertible preferred stock warrant liability.

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References + Details

CONVERTIBLE PREFERRED STOCK (Tables)

3 Months Ended

Oct. 31, 2016

Temporary Equity Disclosure [Abstract]

Schedule of Convertible Preferred Stock



	Shares Authorized	Shares Issued and Outstanding	Aggregate Liquidation Preference
			(In thousands)
Series A	28,165,300	27,396,198	$	15,494
Series B	16,558,441	16,558,441	25,250
Series C	7,683,710	7,683,710	33,000
Series D	13,912,438	13,857,438	151,500
Series E	11,943,420	10,823,724	145,000
	78,263,309	76,319,511	$	370,244

EQUITY AWARD PLANS (Tables)

3 Months Ended

Oct. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of RSUs Activity

The Company’s summary of Performance RSUs activity under the Stock Plan is as follows:



	Number of Shares		Grant Date Fair Value per Share
Outstanding—July 31, 2016	12,265,369		$	13.23
Granted	3,340,762		10.18
Canceled/forfeited	(127,569	)	12.75
Outstanding—October 31, 2016	15,478,562		12.58

Schedule of ESPP Valuation Assumptions



	Three Months Ended October 31, 2016
Expected term (in years)	0.75
Risk-free interest rate	0.6	%
Volatility	50.6	%
Dividend yield	—	%

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Total stock-based compensation expense recognized for stock awards in the consolidated statements of operations is as follows:



	Three Months Ended October 31,
	2015		2016
	(In thousands)
Cost of revenue:
Product	$	109	$	966
Support and other services	293		3,350
Sales and marketing	2,118		33,891
Research and development	1,629		34,026
General and administrative	1,237		18,495
Total stock-based compensation expense	$	5,386	$	90,728

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

Total stock-based compensation expense recognized for stock awards in the consolidated statements of operations by type of awards is as follows:



	Three Months Ended October 31,
	2015		2016
	(In thousands)
RSUs *	$	—	$	82,331
Stock options *	5,386		5,892
ESPP	—		2,505
Total stock-based compensation expense	$	5,386	$	90,728

_____________


*	Includes stock-compensation expense related to stock awards with performance conditions, which vesting was deemed probable as of October 31, 2016.

NET LOSS PER SHARE (Tables)

3 Months Ended

Oct. 31, 2016

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Loss Per Share

The computation of basic and diluted net loss per share is as follows (in thousands, except share and per share data):



	Three Months Ended October 31,
	2015			2016
Numerator:
Net loss	$	(38,545	)	$	(162,169	)
Denominator:
Weighted-average shares—basic and diluted	42,838,933			74,373,788
Net loss per share attributable to common stockholders—basic and diluted	$	(0.90	)	$	(2.18	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share



	Three Months Ended October 31,
	2015	2016
Stock awards	34,003,653	40,764,842
Common stock subject to repurchase	2,192,005	727,254
Common stock warrants	—	769,094
Convertible preferred stock	76,319,511	—
Convertible preferred stock warrants	824,094	—
Total	113,339,263	42,261,190

SEGMENT INFORMATION (Tables)

3 Months Ended

Oct. 31, 2016

Segment Reporting [Abstract]

Schedule of Revenue by Geographic Area

The following table sets forth revenue by geographic area based on bill-to location:



	Three Months Ended October, 31
	2015		2016
	(In thousands)
U.S.	$	56,728	$	102,871
Europe, the Middle East and Africa	16,361		24,248
Asia-Pacific	11,154		28,908
Other Americas	3,513		10,782
Total revenue	$	87,756	$	166,809

ORGANIZATION (Details) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended
ORGANIZATION (Details) $ / shares in Units, $ in Millions	Oct. 31, 2016 USD ($) vote class $ / shares shares	Sep. 30, 2016 vote class shares	Oct. 31, 2016 business vote class $ / shares
Class of Stock [Line Items]
Number of businesses acquired \| business			2
Issuance of common stock upon initial public offering (in shares)	17,100,500
Shares issued price per share (in dollars per share) \| $ / shares	$ 16.00		$ 16.00
Issuance of class A common stock upon initial public offering, net of issuance costs \| $	$ 254.5
Underwriting discounts and commissions \| $	(19.2)
Offering costs incurred \| $	$ 5.1
Common stock, number of classes of stock \| class	2	2	2
Over-Allotment Option
Class of Stock [Line Items]
Issuance of common stock upon initial public offering (in shares)	2,230,500
Preferred Class B \| Common Stock
Class of Stock [Line Items]
Conversion of convertible preferred stock to common stock upon initial public (in shares)	76,319,511
Common Class A
Class of Stock [Line Items]
Common stock number of votes per share \| vote	1	1	1
Common Class B
Class of Stock [Line Items]
Common stock number of votes per share \| vote	10	10	10
Common Class B \| Common Stock
Class of Stock [Line Items]
Conversion of convertible preferred stock to common stock upon initial public (in shares)		76,319,511
Conversion ratio	1	1

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Jul. 31, 2016
New Accounting Pronouncement, Early Adoption, Effect \| Accounting Standards Update 2016-09
Concentration Risk [Line Items]
Deferred tax assets, net	$ 0.1
New Accounting Pronouncement, Early Adoption, Effect \| Retained Earnings \| Accounting Standards Update 2016-09
Concentration Risk [Line Items]
Cumulative effect of new accounting principle in period of adoption			$ 0.1
Partner Concentration Risk \| Revenue \| Partner A
Concentration Risk [Line Items]
Concentration risk percentage	16.00%	19.00%
Partner Concentration Risk \| Revenue \| Partner B
Concentration Risk [Line Items]
Concentration risk percentage	22.00%	20.00%
Partner Concentration Risk \| Revenue \| Partner C
Concentration Risk [Line Items]
Concentration risk percentage	15.00%
Partner Concentration Risk \| Revenue \| Partner F
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	16.00%
Partner Concentration Risk \| Accounts Receivable \| Partner A
Concentration Risk [Line Items]
Concentration risk percentage	12.00%
Partner Concentration Risk \| Accounts Receivable \| Partner B
Concentration Risk [Line Items]
Concentration risk percentage	13.00%		17.00%
Partner Concentration Risk \| Accounts Receivable \| Partner C
Concentration Risk [Line Items]
Concentration risk percentage			12.00%
Partner Concentration Risk \| Accounts Receivable \| Partner D
Concentration Risk [Line Items]
Concentration risk percentage	21.00%		23.00%
Partner Concentration Risk \| Accounts Receivable \| Partner E
Concentration Risk [Line Items]
Concentration risk percentage	11.00%		11.00%

BUSINESS COMBINATIONS - Calm Acquisition (Details) - USD ($) $ in Thousands	Aug. 22, 2016	Oct. 31, 2016	Jul. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 16,784	$ 0
Calm Acquisition
Business Acquisition [Line Items]
Consideration transferred	$ 7,700
Business acquisition equity issued (in shares)	528,517
Cash payment to acquire business	$ 1,400
Goodwill	4,800
Intangible assets	$ 4,000
Estimated Life (in years)	4 years 10 months
Acquisition related costs	$ 600

BUSINESS COMBINATIONS - PernixData Acquisition (Details) - USD ($) $ in Thousands	Sep. 06, 2016	Oct. 31, 2016	Jul. 31, 2016
Purchase Price Allocation:
Goodwill		$ 16,784	$ 0
PernixData Acquisition
Business Acquisition [Line Items]
Consideration transferred	$ 23,000
Business acquisition equity issued (in shares)	1,711,019
Payment term (in years)	3 years
Contingent consideration maximum	$ 19,000
Contingent liability	2,400
Contingent liability adjustment	1,800
Acquisition related costs	700
Purchase Price Allocation:
Cash and cash equivalents	1,051
Accounts receivable	718
Goodwill	11,965
Intangible assets	24,270
Other assets	667
Deferred revenue	(6,007)
Debt	(7,124)
Other liabilities	(2,533)
Total	23,007
Contingent Consideration, Purchase Price \| PernixData Acquisition
Business Acquisition [Line Items]
Contingent consideration maximum	7,500
Contingent Consideration, Compensation \| PernixData Acquisition
Business Acquisition [Line Items]
Contingent consideration maximum	$ 11,500
Minimum \| In-process R&D \| PernixData Acquisition
Business Acquisition [Line Items]
Estimated Life (in years)	5 years
Maximum \| In-process R&D \| PernixData Acquisition
Business Acquisition [Line Items]
Estimated Life (in years)	7 years

BUSINESS COMBINATIONS - PernixData Acquisition, Acquired Intangible Assets (Details) - PernixData Acquisition - USD ($) $ in Thousands		3 Months Ended
	Sep. 06, 2016	Oct. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		$ 24,270
Intangible assets	$ 24,270
In-process R&D
Acquired Indefinite-lived Intangible Assets [Line Items]
In-process R&D	16,100
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 3,570
Estimated Life (in years)	5 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 4,600
Estimated Life (in years)	6 years

BUSINESS COMBINATIONS - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Business Acquisition, Pro Forma Information [Abstract]
Revenue	$ 167,709	$ 88,718
Net loss	$ (163,081)	$ (48,847)
Basic net loss per share (in dollars per share)	$ (2.17)	$ (1.10)
Diluted net loss per share (in dollars per share)	$ (2.17)	$ (1.10)

FAIR VALUE MEASUREMENTS - Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Sep. 30, 2016	Jul. 31, 2016
Financial Assets:
Short-term investments:	$ 121,649		$ 85,991
Financial Liabilities:
Convertible preferred stock warrant liability	0	$ 30,812	9,679
Recurring
Financial Assets:
Total measured at fair value	289,121		138,295
Cash	57,991		46,905
Total cash, cash equivalents and short-term investments	347,112		185,200
Recurring \| Warrant
Financial Liabilities:
Convertible preferred stock warrant liability			9,679
Recurring \| Commitments
Financial Liabilities:
Convertible preferred stock warrant liability	2,557
Recurring \| Corporate bonds
Financial Assets:
Short-term investments:	80,225		64,360
Recurring \| Commercial paper
Financial Assets:
Short-term investments:	31,381		21,631
Recurring \| U.S. government securities
Financial Assets:
Short-term investments:	10,043
Recurring \| Money market funds
Financial Assets:
Cash equivalents:	144,890		47,305
Recurring \| Commercial paper
Financial Assets:
Cash equivalents:	22,582		4,999
Recurring \| Level I
Financial Assets:
Total measured at fair value	144,890		47,305
Recurring \| Level I \| Warrant
Financial Liabilities:
Convertible preferred stock warrant liability			0
Recurring \| Level I \| Commitments
Financial Liabilities:
Convertible preferred stock warrant liability	0
Recurring \| Level I \| Corporate bonds
Financial Assets:
Short-term investments:	0		0
Recurring \| Level I \| Commercial paper
Financial Assets:
Short-term investments:	0		0
Recurring \| Level I \| U.S. government securities
Financial Assets:
Short-term investments:	0
Recurring \| Level I \| Money market funds
Financial Assets:
Cash equivalents:	144,890		47,305
Recurring \| Level I \| Commercial paper
Financial Assets:
Cash equivalents:	0		0
Recurring \| Level II
Financial Assets:
Total measured at fair value	144,231		90,990
Recurring \| Level II \| Warrant
Financial Liabilities:
Convertible preferred stock warrant liability			0
Recurring \| Level II \| Commitments
Financial Liabilities:
Convertible preferred stock warrant liability	0
Recurring \| Level II \| Corporate bonds
Financial Assets:
Short-term investments:	80,225		64,360
Recurring \| Level II \| Commercial paper
Financial Assets:
Short-term investments:	31,381		21,631
Recurring \| Level II \| U.S. government securities
Financial Assets:
Short-term investments:	10,043
Recurring \| Level II \| Money market funds
Financial Assets:
Cash equivalents:	0		0
Recurring \| Level II \| Commercial paper
Financial Assets:
Cash equivalents:	22,582		4,999
Recurring \| Level III
Financial Assets:
Total measured at fair value	0		0
Recurring \| Level III \| Warrant
Financial Liabilities:
Convertible preferred stock warrant liability			9,679
Recurring \| Level III \| Commitments
Financial Liabilities:
Convertible preferred stock warrant liability	2,557
Recurring \| Level III \| Corporate bonds
Financial Assets:
Short-term investments:	0		0
Recurring \| Level III \| Commercial paper
Financial Assets:
Short-term investments:	0		0
Recurring \| Level III \| U.S. government securities
Financial Assets:
Short-term investments:	0
Recurring \| Level III \| Money market funds
Financial Assets:
Cash equivalents:	0		0
Recurring \| Level III \| Commercial paper
Financial Assets:
Cash equivalents:	$ 0		$ 0

FAIR VALUE MEASUREMENTS - Level 3 Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Warrant
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Contingent consideration—beginning balance	$ 9,679	$ 11,683
Change in fair value	21,133	771
Reclassification of unexercised warrants to additional paid-in capital upon the IPO	(30,812)	0
Convertible preferred stock warrant liability—beginning balance	0	$ 12,454
Commitments
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Contingent consideration—beginning balance	0
Change in fair value	186
Assumed in the PernixData Acquisition	2,371
Convertible preferred stock warrant liability—beginning balance	$ 2,557

BALANCE SHEET COMPONENTS - Short-Term Investments (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016
Available-for-sale Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
Due within 1 year	$ 69,700
Due after 1 year through 3 years	51,949
Total	$ 121,649	$ 85,991

BALANCE SHEET COMPONENTS - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Jul. 31, 2016
Property, Plant and Equipment [Line Items]
Total property and equipment—gross	$ 109,513		$ 97,605
Less accumulated depreciation and amortization	(63,185)		(55,387)
Total property and equipment—net	46,328		42,218
Depreciation and amortization	$ 8,200	$ 5,600
Computer, production, engineering and other equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Life (In months)	36 months
Total property and equipment—gross	$ 60,436		54,161
Demonstration units
Property, Plant and Equipment [Line Items]
Estimated Useful Life (In months)	12 months
Total property and equipment—gross	$ 37,149		33,184
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment—gross	$ 7,831		6,619
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated Useful Life (In months)	60 months
Total property and equipment—gross	$ 4,097		$ 3,641

BALANCE SHEET COMPONENTS - Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended
	Sep. 06, 2016	Oct. 31, 2016	Oct. 31, 2016
Finite-lived intangible assets:
Finite-lived intangible assets, gross			$ 12,130
Total intangible assets, gross			28,230
Less:
Accumulated amortization			(405)
Intangible assets, net		$ 0	27,825
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, net—beginning balance		0
Amortization of intangible assets		(405)
Intangible assets, net—ending balance		27,825
Calm Acquisition
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired		3,960
PernixData Acquisition
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired		$ 24,270
In-process R&D
Indefinite-lived intangible asset:
In-process R&D			16,100
Developed technology
Finite-lived intangible assets:
Finite-lived intangible assets, gross			7,300
Less:
Accumulated amortization			(239)
Developed technology \| PernixData Acquisition
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired	$ 3,570
Customer relationships
Finite-lived intangible assets:
Finite-lived intangible assets, gross			4,830
Less:
Accumulated amortization			$ (166)
Customer relationships \| PernixData Acquisition
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired	$ 4,600

BALANCE SHEET COMPONENTS - Future Amortization Expense (Details) $ in Thousands	Oct. 31, 2016 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2017 (remaining nine months)	$ 1,823
2018	2,220
2019	2,201
2020	2,201
2021	2,201
Thereafter	1,079
Total	$ 11,725

BALANCE SHEET COMPONENTS - Accrued Compensation Benefits (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016
Employee-related Liabilities, Current [Abstract]
Accrued commissions	$ 14,599	$ 14,203
Accrued vacation	4,203	3,490
Contributions to ESPP withheld	3,340	0
Accrued bonus	2,498	3,592
Other	3,712	3,262
Total accrued compensation and benefits	$ 28,352	$ 24,547

BALANCE SHEET COMPONENTS - Accrued Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016
Other Liabilities Disclosure [Abstract]
Accrued professional services	$ 3,090	$ 3,585
Income taxes payable	2,463	1,417
Other	1,038	535
Total accrued expenses and other liabilities	$ 6,591	$ 5,537

DEBT (Details) - USD ($)	1 Months Ended	3 Months Ended
DEBT (Details) - USD ($)	Sep. 30, 2016	Oct. 31, 2016	Oct. 31, 2015	Apr. 30, 2016
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt	$ (3,300,000)	$ (3,320,000)	$ 0
Write off of unamortized debt issuance costs	1,700,000
Loss related to guaranteed minimum return	$ 1,600,000
Senior Notes \| Senior Notes Due April 15, 2019
Debt Instrument [Line Items]
Debt instrument face amount				$ 75,000,000.0

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017 (remaining nine months)	$ 7,398
2018	9,762
2019	10,524
2020	10,078
2021	7,212
Thereafter	2,840
Total	47,814
Operating leases, rent expense	2,900	$ 1,400
Non-contract Vendors
Loss Contingencies [Line Items]
Purchase obligation	19,500
Contract Manufacturer
Loss Contingencies [Line Items]
Purchase obligation	$ 19,800

CONVERTIBLE PREFERRED STOCK WARRANTS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Oct. 31, 2016	Sep. 30, 2016	Jul. 31, 2016
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	824,094
Fair value	$ 0	$ 30,812	$ 9,679
Series A Warrants, Issued December 2009
Class of Warrant or Right [Line Items]
Contractual Term (in years)	10 years
Number of Shares (in shares)	683,644
Exercise Price per Share (in dollars per share)	$ 0.234
Fair value		25,883	8,259
Series A Warrants, Issued May 2010
Class of Warrant or Right [Line Items]
Contractual Term (in years)	10 years
Number of Shares (in shares)	85,450
Exercise Price per Share (in dollars per share)	$ 0.234
Fair value		3,235	1,032
Series D Warrants, Issued November 2013
Class of Warrant or Right [Line Items]
Contractual Term (in years)	10 years
Number of Shares (in shares)	10,000
Exercise Price per Share (in dollars per share)	$ 7.289
Fair value		308	77
Series D Warrants, Issued December 2013
Class of Warrant or Right [Line Items]
Contractual Term (in years)	7 years
Number of Shares (in shares)	45,000
Exercise Price per Share (in dollars per share)	$ 7.289
Fair value		$ 1,386	$ 311
Common Class B Warrant
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	769,094
Number of warrants exercised (in shares)	55,000
Exercise of warrants (in shares)	46,529

CONVERTIBLE PREFERRED STOCK (Details) $ in Thousands	1 Months Ended
CONVERTIBLE PREFERRED STOCK (Details) $ in Thousands	Oct. 31, 2016	Sep. 30, 2016 shares	Jul. 31, 2016 USD ($) shares
Temporary Equity [Line Items]
Shares Authorized (in shares)			78,263,309
Shares Issued (in shares)			76,319,511
Shares Outstanding (in shares)			76,319,511
Aggregate Liquidation Preference \| $			$ 370,244
Series A
Temporary Equity [Line Items]
Shares Authorized (in shares)			28,165,300
Shares Issued (in shares)			27,396,198
Shares Outstanding (in shares)			27,396,198
Aggregate Liquidation Preference \| $			$ 15,494
Series B
Temporary Equity [Line Items]
Shares Authorized (in shares)			16,558,441
Shares Issued (in shares)			16,558,441
Shares Outstanding (in shares)			16,558,441
Aggregate Liquidation Preference \| $			$ 25,250
Series C
Temporary Equity [Line Items]
Shares Authorized (in shares)			7,683,710
Shares Issued (in shares)			7,683,710
Shares Outstanding (in shares)			7,683,710
Aggregate Liquidation Preference \| $			$ 33,000
Series D
Temporary Equity [Line Items]
Shares Authorized (in shares)			13,912,438
Shares Issued (in shares)			13,857,438
Shares Outstanding (in shares)			13,857,438
Aggregate Liquidation Preference \| $			$ 151,500
Series E
Temporary Equity [Line Items]
Shares Authorized (in shares)			11,943,420
Shares Issued (in shares)			10,823,724
Shares Outstanding (in shares)			10,823,724
Aggregate Liquidation Preference \| $			$ 145,000
Common Stock \| Common Class B
Temporary Equity [Line Items]
Conversion ratio	1	1
Conversion of convertible preferred stock to common stock upon initial public (in shares)		76,319,511

STOCKHOLDERS’ EQUITY (Details)	Oct. 31, 2016 vote class $ / shares shares	Sep. 30, 2016 vote class shares
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)		200,000,000
Preferred stock, par value (in dollars per share) \| $ / shares	$ 0.000025
Preferred stock, shares issued (in shares)	0
Preferred stock, shares outstanding (in shares)	0
Common stock, number of classes of stock \| class	2	2
Common stock, par value (in dollars per share) \| $ / shares	$ 0.000025
Common Class A
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	1,000,000,000
Common stock, shares issued (in shares)	17,100,500
Common stock number of votes per share \| vote	1	1
Common Class B
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	200,000,000
Common stock, shares issued (in shares)	125,145,728
Common stock number of votes per share \| vote	10	10

EQUITY AWARD PLANS - Additional Information (Details)		1 Months Ended		3 Months Ended
EQUITY AWARD PLANS - Additional Information (Details)	Aug. 16, 2016 USD ($) shares	Sep. 30, 2016 USD ($) purchase_period $ / shares shares	Jul. 31, 2016 $ / shares	Oct. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued price per share (in dollars per share) \| $ / shares				$ 16.00
Compensation not yet recognized \| $				$ 193,900,000
Period for recognition (in years)				1 year 8 months 27 days
Tender Offer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price be considered for conversion (in dollars per share) \| $ / shares			$ 8.41
Options, cancelled in period (in shares)	1,361,317
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost \| $	$ 3,400,000
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)				81,873,371
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				3,340,762
RSUs \| Tender Offer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	911,489
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of eligible compensation (up to)		15.00%
Monetary cap \| $		$ 25,000
Share cap (in shares)		1,000
Offering period duration (in months)		12 months
Number of six-month purchase periods \| purchase_period		2
Purchase price of common stock, percent		85.00%
Common Class A \| 2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)				22,661,656
Shares reserved for future issuance (in shares)					22,400,000
Annual increase (in shares)		18,000,000
Annual increase, percent of outstanding shares		5.00%
Common Class A \| Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		3,800,000
Annual increase (in shares)		3,800,000
Annual increase, percent of outstanding shares		1.00%
Shares issued price per share (in dollars per share) \| $ / shares		$ 16.0
Common Class B \| 2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)				38,667,284

EQUITY AWARD PLANS - RSU (Details) - RSUs - $ / shares	3 Months Ended
EQUITY AWARD PLANS - RSU (Details) - RSUs - $ / shares	Oct. 31, 2016	Jul. 31, 2016
Number of Shares
Outstanding—July 31, 2016 (in shares)	12,265,369
Granted (in shares)	3,340,762
Canceled/forfeited (in shares)	(127,569)
Outstanding—October 31, 2016 (in shares)	15,478,562
Grant Date Fair Value per Share
Outstanding (in dollars per share)	$ 12.58	$ 13.23
Granted (in dollars per share)	10.18
Canceled/forfeited (in dollars per share)	$ 12.75

EQUITY AWARD PLANS - ESPP (Details) - Employee Stock Purchase Plan	3 Months Ended
	Oct. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	9 months
Risk-free interest rate	0.60%
Volatility	50.60%
Dividend yield	0.00%

EQUITY AWARD PLANS - Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 90,728	$ 5,386
Cost of revenue, product
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	966	109
Cost of revenue, support and other services
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	3,350	293
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	33,891	2,118
Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	34,026	1,629
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	18,495	1,237
RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	82,331	0
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	5,892	5,386
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 2,505	$ 0

INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended
INCOME TAXES (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
New Accounting Pronouncement, Early Adoption [Line Items]
Provision for income taxes	$ 76	$ 520
Valuation allowance release	$ 1,500

NET LOSS PER SHARE - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Earnings Per Share [Abstract]
Net loss	$ (162,169)	$ (38,545)
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic and diluted (in shares)	74,373,788	42,838,933
Net loss per share attributable to common stockholders—basic and diluted (in dollars per share)	$ (2.18)	$ (0.90)

NET LOSS PER SHARE - Antidilutive Securities (Details) - shares	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	42,261,190	113,339,263
Stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	40,764,842	34,003,653
Common stock subject to repurchase
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	727,254	2,192,005
Common stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	769,094	0
Convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	76,319,511
Convertible preferred stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	824,094

SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended
SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015	Jul. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 166,809	$ 87,756
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	102,871	56,728
Long-lived assets	54,700		$ 30,000
Europe, the Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	24,248	16,361
Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	28,908	11,154
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 10,782	$ 3,513

RELATED PARTY TRANSACTIONS (Details)		3 Months Ended
RELATED PARTY TRANSACTIONS (Details)	Sep. 06, 2016 USD ($) shares	Oct. 31, 2016 USD ($) director	Oct. 31, 2015 USD ($)	Sep. 05, 2016	Jul. 31, 2016 USD ($)
Related Party Transaction [Line Items]
Purchases from related party		$ 200,000	$ 400,000
Accounts payable, related parties		200,000
Accounts receivable, related parties		0			$ 0
Revenue from related parties		$ 100,000	$ 200,000
PernixData Acquisition
Related Party Transaction [Line Items]
Business acquisition equity issued (in shares) \| shares	1,711,019
Contingent consideration maximum	$ 19,000,000
Lightspeed Venture Partners \| Lightspeed Venture Partners
Related Party Transaction [Line Items]
Number of directors affiliated with related party \| director		2
Lightspeed Venture Partners \| Lightspeed Venture Partners \| Convertible preferred stock
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners					36.70%
Lightspeed Venture Partners \| PernixData Acquisition \| Lightspeed Venture Partners
Related Party Transaction [Line Items]
Business acquisition equity issued (in shares) \| shares	625,478
Contingent consideration maximum	$ 2,700,000
PernixData \| Lightspeed Venture Partners
Related Party Transaction [Line Items]
Ownership percentage				26.40%

SUBSEQUENT EVENTS (Details) - RSUs - $ / shares	1 Months Ended	3 Months Ended
SUBSEQUENT EVENTS (Details) - RSUs - $ / shares	Nov. 30, 2016	Oct. 31, 2016
Subsequent Event [Line Items]
Grants in period (in shares)		3,340,762
Weighted average fair value (in dollars per share)		$ 10.18
Subsequent Event
Subsequent Event [Line Items]
Grants in period (in shares)	4,035,428
Weighted average fair value (in dollars per share)	$ 30.45