This document discusses using JSON Web Tokens (JWT) to build more secure applications. It introduces JWTs, when they should be used, their structure, how they work, and why we should use them. It also lists some additional resources for learning more about JWT, including JWT.io, JsonWebToken by IvanRosolen, JSONWebTokens by FabioVedovelli, and JWT by LuísCobucci. The document recommends JWTs as a way to help build more secure applications.