Pros
Great possibilities for growth i.e. transfers and promotions. Learning opportunities in a wide variety of fields and topics. Very well paid. Benefits are on point. Nice tech too. Endless possibilities to join campaigns or communities for charity or fun. Teams are small and self-managed for the most part. You get to own your product more than any other corporate I have worked for.
Cons
Very high pressure job - expect to work overtime for your first 6 months or so. Very specific ecosystem - relearn a lot to do it the AWS way, i.e. Git or builds. Corporate structure - Though teams are small and self-managed, review processes etc. are quite impersonal checklist-style. Team members all across AWS rotate to be 'On Call', which means you will respond within 15min if your service is down at any time day or night.