JWT (JSON Web Token) is an open standard (RFC 7519) for creating compact, self-contained tokens that securely transmit information between parties as a JSON object. JWTs are digitally signed, ensuring their integrity. They consist of three parts: a header, a payload, and a signature, encoded in Base64 and separated by dots.
JWTs are the de facto standard for authentication in modern web applications and APIs. They enable stateless authentication, meaning the server does not need to store session data. This makes JWTs ideal for microservices architectures, mobile apps, and single-page applications where scalability is critical.
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