EQUITY AWARD PLANS (Tables)

9 Months Ended

Apr. 30, 2018

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

Schedule of RSUs Activity

Below is a summary of RSU activity under the Stock Plans:

	Number of Shares		Grant Date Fair Value per Share
Outstanding at July 31, 2017	17,376,090		$	18.85
Granted	11,374,865		$	34.35
Vested	(4,288,257	)	$	19.13
Canceled/forfeited	(1,748,803	)	$	22.54
Outstanding at April 30, 2018	22,713,895		$	26.27

Schedule of ESPP Valuation Assumptions

We use 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 grant:

	Nine Months Ended April 30,
	2017		2018
Expected term (in years)	0.75		0.75
Risk-free interest rate	0.6	%	1.4	%
Volatility	51.0	%	49.8	%
Dividend yield	—	%	—	%

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

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

	Three Months Ended April 30,				Nine Months Ended April 30,
	2017		2018		2017		2018
	(in thousands)
Cost of revenue:
Product	$	610	$	634	$	2,424	$	1,888
Support, entitlements and other services	2,471		1,951		8,210		6,156
Sales and marketing	15,726		18,051		65,145		47,759
Research and development	27,041		16,474		89,826		49,039
General and administrative	4,503		7,836		28,081		17,630
Total stock-based compensation expense	$	50,351	$	44,946	$	193,686	$	122,472