Well, you walk on to a McDonald’s and order a Big Mac. The chick behind the counter punches in something on the register and then asks "do you want fries with that?".
Well, Active Data Objects Entity Framework is my Big Mac, and in that case, fries must be the new ADO.net Data Services (formerly codename "Astoria").
You probably want to know more (or you would have stopped reading). From the Microsoft site:
"ADO.NET Data Services (also known as Project code name “Astoria”) consists of a combination of patterns and libraries that enables any data store to be exposed as a flexible data service, naturally integrating with the Web, that can be consumed by Web clients within a corporate network or across the Internet."
However, I know you won’t want to take my word for it, why not go and have a look for yourself – I know I will. Hopefully I’ll have a follow up post by next week.