Is it possible to downgrade a Windows Server 2016 Datacenter instance to Windows Server 2016 Standard?
This was marked as a "licensing question." In order to keep the question up, I have to make an edit explaining why it's not. My question has nothing to do with the ins and outs of Microsoft licensing. I'm interested in what's technically possible, not what's permitted. Take a look at the accepted answer. It has nothing to do with licensing. (It is true that Microsoft probably makes it impossible to go from Datacenter to Standard for licensing reasons, but that's beside the point.)