Microsoft Windows Server 2012 R2 Essentials

Windows Server 2012 Datacenter delivers a server platform built on our experience of building and operating many of the world’s largest cloud-based services and data-center. Whether you are setting-up a single server for your small business or architecting a major new data-center environment, Windows Server 2012 will help you cloud-optimize your IT so you can fully meet your organization’s unique needs

Windows Server 2008 R2 Standard provides organizations with the ability to deliver rich Web-based experiences efficiently and effectively, with improved administration and diagnostics, advanced development and application tools, and lower infrastructure costs. Features include: Scalable up to 4 x64/64-bit processors, Up to 250 Network Access Service connections (RRAS), Up to 50 Network Policy Server connections, Up to 250 Remote Services Gateway connections & much more.