In Windows Server 2012 R2,  the Windows Server Essentials user experience is integrated as a Windows Server role,  referred to as Windows Server Essentials Experience. The server role integration enables the following technical capabilities: 
- Standard deployment approach with other server roles & features,  including offline imaging. 
- Remote & batch deployment via Server Manager,  which is optimized for hosting environment. 
- Support for domain join & deployment on an existing domain controller,  which offers more deployment flexibility including 2nd server deployments & branch office deployments. Windows Server 2012 R2 Datacenter is the ideal edition for highly virtualized private & hybrid cloud environments. It provides customers with unlimited virtualization rights & all of the features of the product. The licensing for Datacenter will continue to follow a processor plus CAL model,  however now,  each license will cover up to two physical processors on a server.