I'm curious how they count a server/data-centre CPU. The Xeon range covers servers, to HEDT, to basically "desktop workstation that requires ECC" levels of fun

I'm curious how they count a server/data-centre CPU. The Xeon range covers servers, to HEDT, to basically "desktop workstation that requires ECC" levels of functionality and pricing. For AMD those are three separate ranges, so I'm curious if they can effectively differentiate between a Ryzen bought for a desktop and one going in a server rack.