We have a single server running Windows 2012. The server provides the following roles/functions:
We also have Azure AD connect installed on the server. Our on-prem AD domain is sync'ed to our Azure tenant. All users have a M365 Exchange online mailbox, we don't have an on-prem Exchange server.
In the last 12 months 90% of staff are now working remotely via VPN. We would like to to fully migrate over to Azure/M365 and decommission our on-prem server/AD? We plan to migrate the on-prem file shares to SharePoint/Teams and the office firewall can provide DNS, DHCP and VPN services. We only have a few GPO's and will use InTune to deal with polices etc. This leaves us with the on-prem AD. At the moment, in Azure, all users accounts are shown as 'AD Synced' and computers accounts are listed as 'Hybrid Azure AD joined'. Is there a recommended and support method to fully migrate these over to Azure so we can manage them from here and then safely decommission the on-prem server/AD? Or do we need to manually recreate all the users within Azure, drop the computers off the on-prem AD and enrol them back into Azure? Has anyone done anything like this and if so do you have any suggestions on how you did this while minimising disruption as much as possible?
thanks in advance