Google Cloud Run adds automatic regional failover via load balancer health signals

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Google Cloud announced on July 20 that Cloud Run now supports automatic traffic failover between regions within seconds, eliminating the need for manual runbook-driven responses. The feature introduces two new capabilities: a container-level readiness probe that tracks instance health, and a service-health signal that aggregates regional readiness and exposes it through serverless network endpoint groups. A global external or cross-regional internal application load balancer then uses these signals to reroute traffic away from an unhealthy region automatically. The capability is available across all Cloud Run regions and supports both active-active and multi-region configurations. However, the reliability of failover still depends on correctly authored probes, and full regional resilience also requires that dependent services like databases and queues remain available.

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