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Today we’re launching zonal autoshift, a new capability of Amazon Route 53 Application Recovery Controller that you can enable to automatically and safely shift your workload’s traffic away from an Availability Zone when AWS identifies a potential failure affecting that Availability Zone and shift it back once the failure is resolved.
When deploying resilient applications, you typically deploy your resources across multiple Availability Zones in a Region. Availability Zones are distinct groups of physical data centers at a meaningful distance apart (typically miles) to make sure that they have diverse power, connectivity, network devices, and flood plains.