Revenue and Performance Obligations - Summary of Revenue Disaggregated by Category (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenue Reported per Consolidated Statements of Operations	$ 113,863	$ 75,113	$ 214,760	$ 142,025
Revenue | Product
Disaggregation Of Revenue [Line Items]
Percentage of Total Revenue	100.00%	100.00%	100.00%	100.00%
Total Subscription Revenue
Disaggregation Of Revenue [Line Items]
Revenue Reported per Consolidated Statements of Operations	$ 110,232	$ 73,718	$ 208,616	$ 139,188
Total Subscription Revenue | Revenue | Product
Disaggregation Of Revenue [Line Items]
Percentage of Total Revenue	97.00%	98.00%	97.00%	98.00%
Total Subscription Revenue | License
Disaggregation Of Revenue [Line Items]
Revenue Reported per Consolidated Statements of Operations	$ 15,338	$ 11,798	$ 25,682	$ 21,958
Total Subscription Revenue | License | Revenue | Product
Disaggregation Of Revenue [Line Items]
Percentage of Total Revenue	13.00%	16.00%	12.00%	15.00%
Total Subscription Revenue | Support
Disaggregation Of Revenue [Line Items]
Revenue Reported per Consolidated Statements of Operations	$ 84,257	$ 58,158	$ 163,465	$ 110,888
Total Subscription Revenue | Support | Revenue | Product
Disaggregation Of Revenue [Line Items]
Percentage of Total Revenue	75.00%	77.00%	76.00%	79.00%
Total Subscription Revenue | Cloud Hosted Services
Disaggregation Of Revenue [Line Items]
Revenue Reported per Consolidated Statements of Operations	$ 10,637	$ 3,762	$ 19,469	$ 6,342
Total Subscription Revenue | Cloud Hosted Services | Revenue | Product
Disaggregation Of Revenue [Line Items]
Percentage of Total Revenue	9.00%	5.00%	9.00%	4.00%
Professional Services and Other
Disaggregation Of Revenue [Line Items]
Revenue Reported per Consolidated Statements of Operations	$ 3,631	$ 1,395	$ 6,144	$ 2,837
Professional Services and Other | Revenue | Product
Disaggregation Of Revenue [Line Items]
Percentage of Total Revenue	3.00%	2.00%	3.00%	2.00%