Microsoft Windows Server 2012 R2 Essentials - box pack - 1 server (1-2 CPU), up to 25 users

At the heart of the Microsoft Cloud OS vision, Windows Server 2012 R2 brings Microsoft's experience delivering global-scale cloud services into your infrastructure. Windows Server 2012 R2 offers exciting features and enhancements across virtualization, storage, networking, virtual desktop infrastructure, access and information protection, and more.