I had forgotten that I had the AWS Extension for Visual Studio installed until recently I noticed AWS Explorer item in the View menu option. This add-in allows you to explore the various features that Amazon exposes right from within Visual Studio. The toolkit makes it easier for developers to debug and deploy a .NET solutions that uses AWS.
When you install this, you also get AWS SDK for .NET which provides one with all the building blocks that are required for consuming the IaaS services exposed by AWS including SimpleDB , S3 and EC2 .
If you are or planning to use AWS, this add-in is a must have in my opinion.