A company hosts its app in two regions: a primary and a standby. If the primary becomes unhealthy, traffic should automatically shift to the standby. Which Route 53 feature achieves this?
A) Simple routing policy.
B) Failover routing policy with health checks.
C) Weighted routing with equal weights.
D) Multivalue answer routing.
Correct Answer: B
Explanation: Route 53 failover routing with health checks on the primary endpoint automatically directs traffic to the standby when the primary fails its health check. (A) has no health-based failover. (C) splits traffic by ratio. (D) returns multiple healthy records but isn’t a primary/standby failover design.