Are you aware of SQL Server 2008's spatial capabilities? Now, with the adoption of spatial into SQL Server 2008 there're a lot of questions around Bing Maps rendering support. Microsoft also announced SQL Server 2008 R2 Reporting Services natively supporting Bing Maps. If you want to access the geography and geometry spatial data types for rendering on to Bing Maps Silverlight Control. OnTerra's Data Connector on CodePlex (Getting Started) is a simple, open source way to complete the full cycle of importing data into SQL Server 2008 and rendering onto Bing Maps as point, lines and polygons.
Did you know that SQL Server 2008 Express has spatial support? So, if you're moving to cloud out of the server farm you've access to all the spatial methods in SQL Server 2008 from Windows Azure cloud via SQL Azure. Any way you want to slice and dice the data we have you covered – desktop, server, cloud; and, Bing Maps with the Data Connector is now ready to easily bring all the SQL Server 2008 data to life without any other software, webware or middleware needed!