When dealing with cloud identity providers like AWS Cognito or Firebase and the likes, the option A is actually the most quick to implement. It's centralized fo

When dealing with cloud identity providers like AWS Cognito or Firebase and the likes, the option A is actually the most quick to implement. It's centralized for sure and not that fast, you are basically left with a JWT that acts as a session but you don't have to think about that much, it brings an ok level of security.