London's government agency in charge of public transportation is using the Microsoft Azure cloud computing platform to host a new set of publicly-available data feeds

The Transport for London (TfL) agency is hoping that third-party developers will build mobile and desktop applications that use these data feeds, called Trackernet,

which offer rapidly updated information on the current location of subway trains and scheduled trackwork.

http://www.pcworld.com/businesscenter/article/213585/london_tries_microsoft_azure_for_hosting_data_feeds.html