We have an on prem AD environment. We installed the AD Connect sync software on an on prem domain member server and established a successful sync with an Azure Tenant.
We did this so that we can start offering Sharepoint services to our users.
We also have a hosted Exchange 2013 environment which we would now like to sync into our AD tenant to take advantage of O365 Exchange.
Is there a preferred method to do this Exchange to Tenant migration. We were suggested by our migration partner to stop the AD sync first, do the Exchange 2013 migration to the tenant and start the sync again
We are concerned this may lead to errors/duplication of UPNs etc.? Does anyone know if there is a documented approach on this? Do we need a CLEAN AD tenant before starting Exchange migration ?
Sydney Cherian