Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 220,695	$ 185,742
Less: Accumulated depreciation and amortization	(67,392)	(49,664)
Property and equipment, net	153,303	136,078
Data center and other computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	131,648	87,166
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	35,093	30,354
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	15,517	13,157
Purchased software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,071	2,604
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,306	4,835
Construction in process
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 30,060	$ 47,626

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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