Until recently, deciding which UC solution was best to miraculously transform your organization was a matter of choosing between two worlds: The realm of Microsoft Office Communications Server 2007, Exchange Server 2007, Active Directory and Office Communicator 2007, or the Cisco empire of the Cisco Unified Communications Manager (deployable on the Cisco 7800 Series Media Convergence Servers or on third party servers by HP or IBM), Unified MeetingPlace, Unity messaging products, etc.