I'm not so sure. All you have is another layer of abstraction between you and the problem that you are facing. And that level of abstraction may violate your SLAs unless you pitch $15k for the enterprise support option. And that may not even be fruitful because it relies on an uncertain network of folk at the other end who may or may not even be able to interpret and/or solve your problem. Also you are at the whim of their changes which may or may not break your shit.

Source: AWS user on very very large scale stuff for about 10 years now. It's not magic or perfection. It's just someone else's pile of problems that are lurking. The only consolation is they appear to try slightly harder than the datacentres that we replaced.