Windows Server powers many of the worlds' largest datacentres, enables small businesses around the world, and delivers value to organizations of all sizes in between. Building on this legacy, Windows Server 2012 redefines the category, delivering hundreds of new features and enhancements spanning virtualization, networking, storage, user experience, cloud computing, automation, and more. Simply put, Windows Server 2012 helps you transform your IT operations to reduce costs and deliver a whole new level of business value. Both Standard and Datacentre editions provide the same set of features; the only thing that differentiates the editions is the number of Virtual Machines (VMs). A Standard edition license will entitle you to run up to two VMs on up to two processors (subject to the VM use rights outlined in the Product Use Rights document). A Datacentre edition license will entitle you to run an unlimited number of VMs on up to two processors. All features that are available in the Datacentre edition are also available in the Standard edition, including high availability features like failover clustering. The only difference between the two editions will be virtualization rights.
Server Virtualization: With Hyper-V in Windows Server 2012, it is easier than ever for organizations to gain cost savings from virtualization
Networking: Windows Server 2012 provides an array of new and enhanced features that help reduce networking complexity while facilitating more efficient and cost-effective networking management
Remote Access: Windows Server 2012 offers several ways to provide more efficient, secure, remote access to applications, data, or even an entire desktop environment
Identity and Security: Windows Server 2012 makes it easier for administrators to configure, manage, and monitor users, resources, and devices to ensure proper security and access