Enable CORS globally for all endpoints by adding a configuration class annotated with @Configuration and @EnableWebMvc.
Use the addCorsMappings() method to customize the CORS configuration with specific allowed origins, methods, and headers.
Include the allowed origins, methods, and headers in the addCorsMappings() method to define the CORS policy for the Spring Boot application.
Apply the CORS configuration globally by extending the WebMvcConfigurerAdapter class and overriding the addCorsMappings() method.
Test the CORS configuration by making cross-origin requests to the Spring Boot application and verifying that the CORS headers are present in the responses.