Agreed, it's a matter of degree. You can auto-scale up to a certain amount, at least in Heroku, so in practice you can limit it, say up to 8 servers or somethin

Agreed, it's a matter of degree. You can auto-scale up to a certain amount, at least in Heroku, so in practice you can limit it, say up to 8 servers or something, but nothing beats your own box if you can afford the opportunity cost.