Hello
I am Prakash and happy to help you with your question, I'm a Microsoft consumer like you.
If the computers are members of an Active Directory Domain Services domain, they must all be members of the same forest. If you want to transfer the source's domain name to the destination when cutting over, the destination server must also be in the same domain as the source server. Cutover technically works across domains, but the destination's fully qualified domain name differs from the source's.
https://learn.microsoft.com/en-us/windows-server/storage/storage-migration-service/migrate-data
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