Convert on-prem users to cloud only

Question

Is there a way to convert users and mailboxes that were created on-prem, to cloud only?

We need to get rid of the servers and want every account cloud only.

Answer 1

Disabling the synchronization will convert all users synchronized from AD to Entra ID to cloud only

If you need to do this for some accounts only, then follow https://techcommunity.microsoft.com/t5/security-compliance-and-identity/convert-on-prem-ad-users-from-office-365-azure-ad-to-in-cloud/m-p/42908

"You could terminate the account in Active Directory (which would terminate the account in AAD/O365) after forcing a delta sync, then "reactivate" / "undelete" the account and assign it a license"

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hth

Marcin