Why do newer versions of the Windows client operating systems reduce the TCO for a network running Windows Server 2016?

The latest Windows operating systems provide more automated installation, configuration, desktop, and management policy features compatible with Server 2016.

Explanation:

Windows server 2016 is intended to play a key management role on a network by hosting Active Directory - a database of computers, users, groups of users, shared printers, shared folders, and other domain resources - and by offering a multitude of network services. Windows version 7 through 10 offer the best compatibility with newest version of Active Directory in Windows Server 2016. By combining Windows versions 7 through 10, client workstations and Windows server 2016 under the management of active directory, it is possible to centralise security, application updates, desktop customisation and automated client configuration via a server, thus reducing TCO