Hello!
We want to temporarily deploy our forum locally using a backup of the database to test updates on a subdomain.

Our goal is to ensure a smooth upgrade process before applying changes to the live instance. Let us know if there are any specific guidelines we should follow.

Licensing: Will our license remain valid in this scenario, or could it be affected?

Allowed Subdomains: Are there any recommended or permissible subdomains for staging and testing environments?

You can utilize a Test license key as defined here: https://invisioncommunity.com/4guides/advanced-options/server-management/license-keys-urls-r344/