Hello! My question may seem a bit vague, but I did not know how to briefly synthesize my doubt. What I want to know is: how does Google Maps validate API_KEY and return map in web integration? Basically, the backend and frontend part I can turn around, but how does this Google Maps functionality validate API_KEY, call a callback, and render on the screen?
I do not know if you can understand the question, but it's not JS or backend. Basically, what resources / technologies would I need to know / study in order to create something similar (thinking about technology, not product)? Does it have something to do with mime-type or something like that?