Summary

In this chapter, you learned the difference between an internal and an external application, where external applications require asking the user for consent to grant access, while internal applications do not. You then learned how different web application architectures are secured with Keycloak, and why it is more secure to have a backend for a SPA that obtains tokens from Keycloak, instead of directly obtaining tokens in the SPA itself. You then learned how Keycloak can be used to secure other types of applications, such as native and mobile applications. Finally, you learned that bearer tokens can be used to secure a range of different services, including REST APIs, microservices, gRPC, WebSockets, and a range of other protocols.

You should now have a good understanding of the principles and best practices for securing your application with Keycloak. In the next chapter, we will look at what options are available to integrate all your applications with Keycloak.