As organizations increasingly prioritize application security, the Kong Gateway JWT plugin offers a streamlined approach to API gateway authentication, leveraging JSON Web Tokens (JWT) for secure and efficient credential verification. JWTs facilitate secure data exchange between parties by allowing users to present an access token signed by a trusted party, which is then authenticated by the plugin to grant or deny access to resources. The Kong Gateway acts as a decoupled API gateway that manages authentication, traffic control, and request transformation between users and microservices, with the JWT plugin serving as an authorizer that verifies token authenticity. This approach contrasts with OAuth 2.0 by providing a different authentication method where tokens are not encrypted but rely on token authenticity assured by a trusted signature. By utilizing Kong’s open-source platform and the JWT plugin, developers can focus on core project needs while benefiting from a tested framework that simplifies authentication, enhances security, and supports scalability for microservices architectures. Advanced use cases include granular user authentication, selective route protection, and public/private key configurations, offering flexibility for various application requirements.