I'm sure it's me being an idiot, but once again I spent 20m trying to figure how to do a specific thing in google-land and still haven't figured it out. Even if I did set it somewhere, I see things like "Setting a budget does not cap resource or API consumption" with a link to a bunch of documentation I have to analyze.

This is what working with cloud services is like, in my experience. Azure's UI feels like it was made as a joke flash game on Newgrounds.