Interesting to see that some people assumed there are no kill-switch mechanism, and when it turns out they just did not know about it, the (totally valid and factful) comment gets downvoted because it is against their initial assumption. Not what I would have expected on a professional forum.
I do not downvote comments when I disagree, and I think it’s better to explain why I would strongly disagree. Downvoting in this case almost reinforces the notion that the downvoted comment makes such a good point that it causes people to give up on the discourse and just smash the panic downvote button. It’s obvious to me why this is not the case for this comment.
The suggestion to setup some kind of IAM policy to shut things down and stop resource usage is insanely complicated for users who need this kind of feature the most. If I’m learning AWS and just added my CC to it, I am the last person to be qualified to setup this kind of an alert and policy from scratch. This needs to be a single text input in the billing page, like it is for countless spend-as-you-go services. When the limit is hit, the service needs to stop the usage at the customers peril, because that’s what they customer requests.
Hope this helps.