LYNC is coming, but for those Hosters who arent early adopters and are going for stability: a great blog post about OCS 2007 R2 and the associated data flow, click here: http://blogs.technet.com/b/ucedsg/archive/2010/02/03/very-cool-ocs-2007-r2-architecture-poster-available.aspx
How to size your Windows 2008 R2 RDS Session Host in your hosting environment:
Are you looking for sizing guidance on RDS Session hosting? Here is a document which has proven to be a great resource to get started for hosting partners: http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=ca837962-4128-4680-b1c0-ad0985939063