Whether you are just getting around to adding authentication to a project that's almost complete, or trying to plan an authentication infrastructure for a whole suite of applications, or rework legacy systems to integrate their security methods with each other or with more modern projects, JWTs (JSON Web Tokens) may turn out to be just what you've been looking for. They can significantly improve your ability as a developer or product manager to stay on top of security requirements, including the need for consistency, reliability, strength of protection, and extensibility. See how techniques and mindsets developed around the use of JWTs can be used to avoid problems in the project planning phase as well as overcome obstables in projects that are well underway. Become familiar with concepts such as trust propagation and token translation. See the tradeoffs for alternative placements of authorizing services that work with JWTs.