When should I use Firebase app?

When your applications require a minimal level of integration with legacy systems or third-party services , firebase will be the right choice. Firebase also becomes an ideal choice when your application does not require heavy data processing or any form of complex user authentication requirements.

Read more

Is Firebase Auth JWT?

Firebase gives you complete control over authentication by allowing you to authenticate users or devices using secure JSON Web Tokens (JWTs) . You generate these tokens on your server, pass them back to a client device, and then use them to authenticate via the signInWithCustomToken() method.

Read more