When designing a high-availability architecture on GCP, what is the key benefit of deploying across multiple zones within a region compared to a single zone deployment?

Question

Google Cloud (GCP) — Hard

When designing a high-availability architecture on GCP, what is the key benefit of deploying across multiple zones within a region compared to a single zone deployment?

Accepted Answer

Deploying across multiple zones within a region on GCP provides protection against zone-level failures. This approach maintains low latency compared to multi-region setups. Incorrect options misrepresent the benefits of multi-zone deployments, such as reducing network egress costs or eliminating health checks.