Windows Server Core Add-On is a specialized edition of Windows Server that provides a simplified and minimal installation of the operating system. This edition is designed for customers who prefer to run applications on a server with a smaller attack surface and reduced maintenance requirements. The Windows Server Core add-on is available as an add-on to either the Standard or Datacenter editions of Windows Server, and it can be installed in Server Core or Server with Desktop Experience mode. The add-on provides additional features and capabilities, such as Windows Admin Center integration, which allows administrators to manage multiple servers from a single web interface. With the Windows Server Core Add-on, organizations can create a more efficient, secure, and manageable server environment that meets their specific needs.