Given the amount of change inside Office 365, it can be hard to test everything before new software appears in production. Which is why you should have a test or development Office 365 tenant. You can check out new features in safety, or run code downloaded from the internet like PowerShell scripts or new versions of PowerShell modules. All in all, it’s a great idea.
https://office365itpros.com/2021/04/15/test-development-office-365-tenant-test-new-features/
