Windows Server 2019 is the latest and greatest version of Windows Server. It includes new features and functions too numerous to list, beginning with the Windows Admin Center, a server management utility that is designed for Windows Server 2019 but it can still manage servers operating Windows Server 2012 R2 and Windows Server 2016.Can Windows 10 be used as a server?
With all that said, Windows 10 is not server software. It is not intended to be used as a server OS. It cannot natively do the things that servers can. But, with a little help from 3rd party software, it does a pretty good job.