JSON Web Tokens

JSON Web Tokens (JWT) are a way to securely transmit information between parties as a compact and self-contained string. They consist of three parts: a header, a payload, and a signature. The header specifies how the token is encoded, the payload contains the actual data (like user information or permissions), and the signature ensures that the data hasn't been altered. JWTs are commonly used for authentication in web applications, allowing users to prove their identity without needing to send sensitive information with each request. They are easy to use, lightweight, and can be verified easily by the recipient.