Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Apr. 30, 2020	Apr. 30, 2019
Revenue:
Total revenue		$ 210,460	$ 187,468
Cost of Revenue:
Total cost of revenue	[1],[2]	54,241	61,233
Gross profit	[1],[2]	156,219	126,235
Operating expenses:
Research and development	[1],[2]	64,216	64,173
Sales and marketing	[1],[2]	113,135	119,383
General and administrative	[1],[2]	34,675	46,432
Total operating expenses	[1],[2]	212,026	229,988
Loss from operations		(55,807)	(103,753)
Interest income		2,241	3,291
Other income (expense), net		(2,497)	233
Loss before provision for income taxes		(56,063)	(100,229)
Provision for income taxes		(1,951)	(2,901)
Net loss		$ (58,014)	$ (103,130)
Net loss per share, basic and diluted (in dollars per share)		$ (0.20)	$ (0.38)
Weighted-average shares used in computing net loss per share, basic and diluted (in shares)		295,293	271,352
Subscription
Revenue:
Total revenue		$ 187,085	$ 154,838
Cost of Revenue:
Total cost of revenue	[1],[2]	28,636	29,337
Services
Revenue:
Total revenue		23,375	32,630
Cost of Revenue:
Total cost of revenue	[1],[2]	$ 25,605	$ 31,896

[1] Amounts include amortization of acquired intangible assets as follows (in thousands): Three Months Ended April 30,20202019Cost of revenue – subscription $3,079  $2,910  Sales and marketing 16,597  17,250  

[2] Amounts include stock-based compensation expense as follows (in thousands): Three Months Ended April 30,20202019 Cost of revenue – subscription $3,992  $3,819   Cost of revenue – services 3,987  4,260   Research and development 19,824  17,841   Sales and marketing 15,823  13,364   General and administrative 9,812  9,587