When using DAPR service invocation in Container Apps, what does the appId property specify?

1. A The container image name
2. B The DAPR component version
3. ✓ C The unique identifier of the target app within the environment for service-to-service calls (correct answer)
4. D The Azure resource name

Shortcut: The DAPR appId is the unique name of the target Container App (set via --dapr-app-id). DAPR uses this for service discovery and invocation routing within the environment.