It is called the Server Configuration Tool and is started by running the command
sconfigFrom Microsoft's site
"In Windows Server 2012, you can use the Server Configuration tool (Sconfig.cmd) to configure and manage several common aspects of Server Core installations. You must be a member of the Administrators group to use the tool.
Sconfig.cmd is available in the Minimal Server Interface and in Server with a GUI mode."
For those server admins that like the command line this is one worth trying.