[yeukhon]

> As soon as your infrastructure becomes more complicated, you can use Heroku instead of hiring people to manage it for a while.

I would expect the other way around. In fact, "for a while" doesn't work in real life. So moving from AWS to Herkou then migrate to another IaaS? That's going to be really costly. My pitch is use the tool you are more comfortable with at the beginning. When you grow to a reasonable size, I would start creating infrastructure on AWS directly (or other IaaS providers). I work with AWS daily so if I were to start my business I'd build on AWS first (plus there is AWS startup credits that you can apply). YMMV.