Windows Server 2016 is a server operating system developed by Microsoft as part of the Windows NT family of operating systems, developed concurrently with Windows 10. The first early preview version (Technical Preview) became available on October 1, 2014 together with the first technical preview of System Center. Unlike previous Windows Server versions, which were released simultaneously with the client operating system, Windows Server 2016 was released on September 26, 2016 at Microsoft's Ignite conference and became generally available on October 12, 2016.