what is windows os server
Answer Wiki. I don't know that you're going to find a book or journal or report on Microsoft client operating systems. The client operating systems are the ones which are intended to work with their server operating systems. The server operating systems are the ones which include Server in the name -- Microsoft Windows Server 2015, for example. They provide server functionality -- networked filesystems, databases, remote terminal / desktop serving, domain or login services -- to the client operating systems.