The MS365DSC https://microsoft365dsc.com/ is an extensive powershell module that allows exporting, importing, monitoring, comparing and automating 365 conifigurations. It is a very capable and a
If you have a hybrid email config where some mailboxes resides in MS365 cloud and some in on-premises systems, and you want to keep it
A cutover migration from on-premises Exchange to Office 365 is fairly well documented on Docs at https://docs.microsoft.com/en-us/exchange/mailbox-migration/cutover-migration-to-office-365 In this scenario take into consideration that Azure
Office 365 Cutover migration, from on-premises Exchange. If a cutover migration is right for your scenario, make sure to not run the Dirsync, or Azure