Exam Professional Cloud Developer topic 1 question 147 discussion

B. Define your service endpoint information as label data that is retrieved at runtime and used to connect to the desired service: Labels are primarily used for tagging and filtering resources, not for dynamic service discovery. C. Define your service endpoint information to be retrieved from an environment variable at runtime and used to connect to the desired service: While environment variables can be used for configuration, they are not as flexible or scalable as metadata for managing service endpoints. D. Define your service to use a fixed hostname and port to connect to the desired service. Replace the service at the endpoint with your new version: This approach is inflexible and requires manual updates to the service endpoint whenever a new version is deployed.

Ansuwer is A: Labels are used to categorize and organize resources in Google Cloud Platform, such as Compute Engine instances. While they can also be used to store endpoint information, they may not be as flexible as metadata when it comes to dynamically retrieving information at runtime. Additionally, labels are associated with individual resources, so updating the label data would require modifying the specific resource, rather than a centralized metadata store. In some cases, using labels may be more appropriate, such as when you want to categorize and organize your resources, but for managing service endpoints in a loosely coupled architecture, metadata is generally a more flexible and scalable solution.