How to SECURE My Microservices Architecture (REACTJS + SPRING CLOUD GATEWAY) With Keycloak

In this video I show how to connect a React application to a Spring Cloud Gateway backend using Keycloak as an Authorization Server.
This video belongs to a playlist where I show how to implement an Authorization Server with Spring Security: • Authorization Server
Content:
* What's the difference between the backend authentication workflow and the frontend authentication workflow with Keycloak;
* What's the PKCE Authorization Code Flow;
* How is the API Gateway configured with a connected React application;
* How is the resources server configured to be connected with Keycloak;
* How to connect a React application with Keycloak;
* How to register a public client in Keycloak.
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