Windows Server 2019 Standard is a version of the Windows Server operating system developed by Microsoft. It is designed for use on servers, and is typically used by businesses and organizations for tasks such as file and printer sharing, remote access, and running business-critical applications. The "16 Core" version means that it is licensed to use on servers with up to 16 CPU cores. This version of Windows Server includes features such as enhanced security, improved storage capabilities, and support for hybrid cloud environments.