How do I handle authentication with Firebase auth, Cognito and other similar services?

So, without them, i might have a jwt middlewere, on every request, i send issued token to the backend, verify it, and it if is valid, continue doing stuff with valid user's id, username, etc. but i kind of can not grasp how services, such as firebase auth and cognito would work. do i need to send issued tokens from them as well in the backend, verify and do actions, or can i just send user's id and not care about anything else?

Submitted March 02, 2020 at 09:35AM by warchild4l