Microsoft IT maintains a complex Exchange environment that consists of several geographic locations and multiple Active Directory forests. There are 16 data centers, four of which host Exchange servers, to support more than 515 office locations in 102 countries with more than 180,000 users.
By replacing Exchange Server 2007 servers with servers running Exchange Server 2010, Microsoft IT created new opportunities to drive down costs and system complexities while at the same time increasing security and deploying new features not available in previous versions of Exchange Server.
Download the whitepaper here