CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Revenue:
Product	$ 143,142	$ 89,957	$ 411,307	$ 241,582
Support and other services	48,621	24,733	129,460	63,561
Total revenue	191,763	114,690	540,767	305,143
Cost of revenue:
Product	62,593	33,427	173,206	91,061
Support and other services	20,613	9,966	56,608	25,347
Total cost of revenue	83,206	43,393	229,814	116,408
Gross profit	108,557	71,297	310,953	188,735
Operating expenses:
Sales and marketing	128,007	75,849	368,026	200,576
Research and development	74,607	31,390	220,802	81,271
General and administrative	15,610	8,761	60,463	23,976
Total operating expenses	218,224	116,000	649,291	305,823
Loss from operations	(109,667)	(44,703)	(338,338)	(117,088)
Other income (expense)—net	303	(2,106)	(25,830)	(331)
Loss before provision for income taxes	(109,364)	(46,809)	(364,168)	(117,419)
Provision for income taxes	2,613	11	3,190	1,151
Net loss	$ (111,977)	$ (46,820)	$ (367,358)	$ (118,570)
Net loss per share attributable to common stockholders—basic and diluted (in dollars per share)	$ (0.78)	$ (1.05)	$ (3.07)	$ (2.72)
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic and diluted (in shares)	144,054,432	44,441,954	119,851,586	43,643,451