Not _really_. AWS has a budget tool, but it doesn’t natively support shutting down services. Of course, you can ingest the alerts it sends any way you want, including feeding them into pipelines that disable services. There’s plenty of blueprints you can copy for this. More seriously - and this is a legitimate technical limitation - of course AWS doesn’t check each S3 request or Lambda invocation against your budget, instead, it consolidates periodically via background reporting processes. That means there’s some lag, and you are responsible for any costs incurred that go over budget between such reporting runs.
> of course AWS doesn’t check each S3 request or Lambda invocation against your budget
If it can bill them per-invocation, why can't it also check against a budget? I don't expect it to be synchronous, but a lag of minutes to respond is still better than nothing. Can you even opt-in to shutting down services from the budget tool, or is that still something you have to script by hand from Cloudwatch alarms?
You script it by hand.
I think figuring out how to do this faster is less trivial than it might sound. I agree that synchronous checks aren’t reasonable. But let’s take Lambdas. They can run for 15 minutes, and if you consolidate within five minutes after a resource has been billed, that gives you a twenty minute lag.
I’m not trying to make apologies for Amazon, mind you. Just saying that this isn’t exactly easy at scale, either. Sure, they bill by invocation, but that’s far from synchronous, too. In fact, getting alerts might very well be happening at the frequency of billing reconciliation, which might be an entirely reasonable thing to do. You could then argue that that process should happen more frequently, at Amazon’s cost.
> but it doesn’t natively support shutting down services [...] of course AWS doesn’t check each S3 request or Lambda invocation against your budget, instead, it consolidates periodically via background reporting processes
So, in other words, the vendor has provided substandard tooling with the explicit intent of forcing you to spend more money.