You have deployed a new revision of a Cloud Run service. You want to perform a canary deployment by routing 10% of the incoming traffic to the new revision and keeping 90% on the old revision.

How should you configure this?

Deploy an External HTTP(S) Load Balancer in front of Cloud Run and configure traffic splitting in the backend service.

Use the Cloud Console or gcloud to update the traffic splitting percentages for the service.

Modify the application code to randomly reject 90% of requests, forcing them to retry on the old revision.

Create a second Cloud Run service and use Cloud DNS weighted routing to split the traffic.