JWT
A JSON Web Token (JWT), is a compact URL-safe means of representing claims to be transferred between two parties. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS).
Standard
JSON Web Token is a standard. A typical token will consist of a header, a payload and a signature.
Compact
Because the JWT is comprised of encoded JavaScript Object Notation (JSON) objects, it is compact enough to be sent through a URL query, a POST parameter, or an HTTP header. JSON objects are simpler and more compact than Security Assertion Markup Language (SAML) assertions, which use XML. Due to its smaller size, it can also be transmitted faster.
Easy to Use
JWT is ideal for applications that can not or do not want to use cookies, such as mobile native apps and desktop apps. In a standard web-forms application, the user logs into a web site and receives a session/token cookie that the browser sends back with each subsequent request to the site, in order to avoid checking the user's credentials with each request. JWT simply replaces the cookie with a token that is smaller and faster to transmit.
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