Revenue and Performance Obligations - Summary of Revenue By Region Based On The Billing Address of Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	$ 113,863	$ 75,113	$ 214,760	$ 142,025
Revenue | Region
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of Total Revenue	100.00%	100.00%	100.00%	100.00%
US [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	$ 83,402	$ 53,148	$ 156,192	$ 102,810
US [Member] | Revenue | Region
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of Total Revenue	73.00%	71.00%	73.00%	72.00%
Rest of the world [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	$ 30,461	$ 21,965	$ 58,568	$ 39,215
Rest of the world [Member] | Revenue | Region
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of Total Revenue	27.00%	29.00%	27.00%	28.00%