Codename Dallas
Project Dallas is Microsoft's entry into the new data-as-a-service (DaaS) market. The goal of Dallas is to provide a single authoritative source and a single billing method for public data. Think of Dallas as a "data marketplace", where we can buy subscriptions to data useful for our applications, and where data providers can sell their data.
The data in Dallas are accessible via a REST API, and can be consumed by applications on any platform. Support will be for SQL Server and SQL Azure to directly consume Dallas data, but this has not been delivered at the time of writing.
More information on Codename Dallas can be found at http://www.microsoft.com/windowsazure/dallas/.