You have deployed a new revision of a Cloud Run service. You want to route 10% of the traffic to the new revision for testing, while keeping 90% on the old revision. How can you achieve this?

Cloud Run natively supports traffic splitting. When you deploy a new revision, you can specify exactly what percentage of incoming traffic should be routed to it. This is ideal for canary deployments and A/B testing. You can configure this easily via the Cloud Console or using `gcloud run services update-traffic`.