HTTP interceptors are powerful middleware that allow you to intercept and transform HTTP requests and responses globally across your Angular application. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented interceptors in numerous enterprise Angular applications for authentication, logging, and error handling. From my 25 years of experience in web development and 11 years with Angular, the most effective approach is to create interceptors that implement the HttpInterceptor interface and register them in your application module. This pattern provides consistent request/response handling across all HTTP calls.