Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Revenue:	$ 326,700	$ 255,945
Cost of revenue	110,313	89,630
Gross profit	216,387	166,315
Operating expenses:
Research and development	105,075	78,492
Sales and marketing	166,626	122,367
General and administrative	42,110	27,330
Total operating expenses	313,811	228,189
Loss from operations	(97,424)	(61,874)
Other income (expense), net	(1,816)	(999)
Loss before provision for income taxes	(99,240)	(62,873)
Income tax provision	1,096	1,431
Net loss	$ (100,336)	$ (64,304)
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (0.41)	$ (0.29)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted (in shares)	245,334	223,768
Product
Revenue:	$ 238,741	$ 195,449
Cost of revenue	76,592	66,420
Support subscription
Revenue:	87,959	60,496
Cost of revenue	$ 33,721	$ 23,210