Over on the TechNet Wiki site there is a great comparison chart between Outlook 2003 through to Outlook and OWA 2010. While the acronym for OWA has stayed the same over the years, the definition has changed from “Outlook Web Access” to “Outlook Web App” in 2010. Have a look here: http://social.technet.microsoft.com/wiki/contents/articles/outlook-and-owa-version-and-features.aspx
Category: Exchange Online Deskless Worker
Service descriptions for Microsoft Online Services (standard)
Microsoft last week released updated service descriptions for Microsoft Online Services which consolidate all of the relevant information into a few easy downloads. You can get access to these documents here: http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=c60c0af0-10cc-4b11-bcef-b989c1f168b0