Heroku is selling a lot more than Google. With Heroku there are few constraints on your app other than Ruby. You can do very traditional web development (SQL am

Heroku is selling a lot more than Google. With Heroku there are few constraints on your app other than Ruby. You can do very traditional web development (SQL among other things) and there are a lot of conveniences available for you. You should be able to build your app faster and launch 1 instance for $0, and then pay Heroku when it needs to scale. Google will force you to build in a more cumbersome manner, but it will scale much better so you won't have to pay them as much. You are always going to pay more for something like Heroku that is very much optimizing developer time.