Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	[1]	Oct. 31, 2018	Oct. 31, 2017	[1]
Revenue:
Total revenue	$ 105,576	$ 66,911		$ 283,783	$ 179,495
Cost of revenue:
Total cost of revenue	29,700	21,123		82,035	58,268
Gross profit	75,876	45,788		201,748	121,227
Operating expenses:
Research and development	27,596	19,190		72,354	51,472
Sales and marketing	56,911	47,567		165,408	120,761
General and administrative	19,848	13,546		55,873	37,133
Total operating expenses	104,355	80,303		293,635	209,366
Operating loss	(28,479)	(34,515)		(91,887)	(88,139)
Other income (expense), net	(1,705)	509		(4,682)	872
Loss before provision for (benefit from) income taxes	(30,184)	(34,006)		(96,569)	(87,267)
Provision for (benefit from) income taxes	(667)	(940)		(1,883)	(463)
Net loss	$ (29,517)	$ (33,066)	[2]	$ (94,686)	$ (86,804)	[3]
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (0.27)	$ (0.35)		$ (0.89)	$ (1.13)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted (in shares)	108,776	95,474		106,587	76,950
Subscription
Revenue:
Total revenue	$ 97,698	$ 61,863		$ 262,393	$ 165,459
Cost of revenue:
Total cost of revenue	20,265	13,553		55,808	37,401
Professional services and other
Revenue:
Total revenue	7,878	5,048		21,390	14,036
Cost of revenue:
Total cost of revenue	$ 9,435	$ 7,570		$ 26,227	$ 20,867

[1] See Note 2 for a summary of adjustments.

[2] See Note 2 for a summary of adjustments.

[3] See Note 2 for a summary of adjustments.