Windows Server 2016 was released to manufacturing (RTM) on September 26, 2016, with . The versioning follows the pattern: 14393 = core RTM branch, .970 = cumulative update revision.
: This is the base version of the server operating system, released by Microsoft on September 26, 2016. It's part of the Windows NT family of operating systems and is designed to provide a platform for developing, running, and managing enterprise-level applications and services. windows server 2016 build 14393970 enus april 2017 2021
Included pre-installed updates and UEFI support for modern hardware deployments. Lifecycle & 2021 Support End of Mainstream Support: January 11, 2022. Windows Server 2016 was released to manufacturing (RTM)