Microsoft Windows Server 2012 R2 Datacenter - license - 2 CPU, unlimited VM

Windows Server 2012 R2 captures Microsoft's experience of delivering global-scale cloud services to provide an enterprise-class server and cloud platform. It lets you optimize performance for your most important workloads and helps to protect against service outages with robust recovery options. It reduces complexity and cost with comprehensive automation plus storage and networking virtualization solutions based on industry-standard hardware. It lets you build, run, and scale applications that can move between your datacenter and the cloud, and allows you to provide your users with flexible remote access from virtually anywhere and any device while helping to protect corporate information.