If you’re in the planning stages of moving from HMC to Exchange 2010, please make sure to read this blog post on the Exchange Partner Marketing blog:
http://blogs.technet.com/b/hameroff/archive/2011/08/08/so-you-want-to-host-exchange.aspx
Notice that hosters migrating from HMC aren’t forced down the /hosting route!
Until later,
Henrik Walther
Technology Architect/Writer/MS Vendor
MCM: Exchange Server | MVP: Exchange Architecture