Amazon S3 service has been around for a while. It’s another example of available cloud storage.. Here is a great article over at Programmerpayback.com at how to host Microsoft Silverlight application on that service. Great setup details..

Why use S3 for storage.. Cost savings and benefit for hosting..

According to the article:

“..And with S3, the costs depend on the usage — which will literally cost you just pennies per month until you have some descent traffic. Do the math and you’ll see that it would only cost 17 cents to have a  300K .xap get hit 3500 times. At that rate you’d pay ~$48 to have 1 million new users per month. (I say “new” users because unless you update your xap, users should be caching your xap file and won’t need to re-download it)..”