JSON Web Token (JWT)

A JSON Web Token (JWT) is a secure way for computer systems to verify a user's identity and permissions online. Think of it as a digital passport that contains information about the user, encoded in a compact, but tamper-proof format. When a user logs in, the server issues this token, which the user then sends with future requests. The server can quickly check the token’s signature to confirm the user’s identity without needing to re-authenticate each time. JWTs enable safe, efficient communication between systems, ensuring the right users access the right data securely.