If your app is Railsian and will have requests that take a few seconds to be served, I'd suggest AWS. If it's ultimately a simple CRUD app then Heroku should be

If your app is Railsian and will have requests that take a few seconds to be served, I'd suggest AWS. If it's ultimately a simple CRUD app then Heroku should be fine until you're at significant scale - and this issue will never be as severe. Bit I wrote earlier about time-consuming requests - http://news.ycombinator.com/item?id=5216593 http://news.ycombinator.com/item?id=5216593