SQL Server Data Services
In case you missed it, Microsoft announced SQL Server Data Services (SSDS) today at MIX08, and you can sign up for a free beta.
It's "a Web-facing utility-based services designed for businesses and developers that need scalable, highly available, secure and easily programmable on-demand data storage with robust database query capabilities."
For those that don't read marketing, it's SQL Server provisioned via the web. ;-)