Exam Professional Cloud Developer topic 1 question 303 discussion

You are developing a web application that will be deployed to production on Cloud Run. The application consists of multiple microservices, some of which will be publicly accessible and others that will only be accessible after authentication by Google identities. You need to ensure that only authenticated users can access the restricted services, while allowing unrestricted access to the public services of the application. You want to use the most secure approach while minimizing management overhead and complexity. How should you configure access?