The SSDS or SQL Server Data Services program was recently announced - http://www.microsoft.com/sql/dataservices/default.mspx. SSDS is basically a set of web services that provide a database in the clouds.
This is great news for folks building and hosting their web applications. Core value propositions I see are
The SSDS site has a link for registering for the free beta program. I don't know when the beta program starts (I got put on a waiting list), but I can't wait :). Meanwhile here's a link to a MIX '08 session on SSDS - http://sessions.visitmix.com/?selectedSearch=BT05 (search for "Introducing SQL Server Data Services").
- Ameya Bhatawdekar