Exchange 2010, Windows 7 and Windows Server 2008 R2 help customers realize better productivity, efficiency and potential cost savings up to 70 percent

Microsoft Exchange Server 2010 is now available worldwide to help businesses reduce costs, protect communications and delight e-mail users. Along with Windows 7 and Windows Server 2008 R2, Exchange Server 2010 is part of a generation of solutions designed for increased business productivity and cost savings.

https://www.microsoft.com/presspass/press/2009/nov09/11-09techedeurope09pr.mspx