Microsoft Exchange Server 2013 Enterprise CAL - license

Microsoft Exchange Server 2013 brings a rich set of technologies, features, and services to the Exchange Server product line. Its goal is to support people and organizations as their work habits evolve from a communication focus to a collaboration focus. At the same time, Exchange Server 2013 helps lower the total cost of ownership whether you deploy Exchange 2013 on-premises or provision your mailboxes in the cloud.