Modern web applications rely on JSON Web Tokens (JWT) for secure communication between frontend and backend.
The security flow using JWT involves user login request, backend authentication, token storage in frontend, accessing protected resources, verifying JWT in the backend, token refreshing, and logout.
Best practices include using HTTPS, short accessToken lifespan, secure token signing, safe token storage, and validation on every request.
JWT implementation ensures secure, stateless authentication when followed correctly, enhancing user-friendliness and security in modern web applications.