There was an #AWS outage in April 2011 and then again in Aug 2011, both times very large websites went down including Netfliz, Quora etc. <br/><br/> I have been an EC2 user since early 2007, I cannot guarantee that your app will work at all times, but I can hope to show you what I have learned and mistakes that I made so you don't do the same. Here is the link to the presentation. http://www.slideshare.net/ManuMukerji/manu-mukerji-svcc-2011 thanks, Manu