KMS

KMS activates computers on a local network, eliminating the need for individual computers to connect to Microsoft. To do this, KMS uses a client–server topology. KMS client computers can locate KMS host computers by using Domain Name System (DNS) or a static configuration. KMS clients contact the KMS host by using remote procedure call (RPC). KMS can be hosted on computers that are running the Windows Vista, Windows 7, Windows Server 2003, Windows Server 2008, or Windows Server 2008 R2 operating systems