Microsoft Windows Server 2008 R2 Enterprise - license

Windows Server 2008 R2 Enterprise provides unprecedented levels of system uptime, the latest security advances, and the scalability to support the growth of mission-critical applications. It also provides a cost-effective way to realize the benefits of virtualization. Windows Server 2008 R2 Enterprise is an optimal operating system for servers running applications such as networking, messaging, inventory, databases, and customer service systems.