[falcolas]

> are you going to say all 8 regions will go down at once

I hope not. But then it's not just Lambda triggered by cloudwatch alarms anymore. You'd probably have to set up something to ensure that Lambda, when called via cloudwatch alarms, is being triggered properly. Useful, but suddenly a lot more complicated.

> The whole setup will still cost $0/month.

Unlikely. A small amount, but certainly not 0. Especially when you start adding Lambda heartbeats.

> And some people enjoy implementing old use cases using new technology.

Which is fine; call it an experiment, call it exploration, I have no problem with that. It's frustrating to see such a stripped down article treating it like it's going to be the one, without reasonable discussions about how it could fail. There are a minimum of three failure points in this system alone, with no discussion on how to compensate for them.