The Windows Server 2012 R2 Standard Edition from Microsoft lets you create, run, and maintain enterprise-class servers and cloud services, protect data stored on either, and allow users remote access from anywhere including mobile devices. Carrying over all the same features of Windows Server 2012, this version has added Software Inventory Logging, Mobile Device Management Registration and enhancements in virtualization, management storage, networking and more.
Standard edition is ideal for those customers who want to have a physical or lightly virtualized environment. This edition enables you to run up to two virtual instances of Windows Server with each license and provides all the same features as the Datacenter edition. The licensing for the Standard edition are processor plus Client Access License (CAL), with each license covering up to two physical processors on a single server.