Question

A financial reporting company runs its primary web application in the us-east-1 Region behind an Application Load Balancer. To meet a strict recovery time objective, the company deploys an identical but scaled-down standby environment in us-west-2 that is always running. Both environments have their own ALBs. The company wants users to be automatically routed to the standby Region only if the primary Region becomes unhealthy, with minimal manual intervention. Which approach best meets these requirements?

Accepted Answer

Configure Amazon Route 53 failover routing with the us-east-1 ALB as the primary record and the us-west-2 ALB as the secondary record, associating a Route 53 health check with the primary endpoint.

Answer

Configure Amazon Route 53 weighted routing, assigning a weight of 100 to the us-east-1 ALB and a weight of 0 to the us-west-2 ALB.

Answer

Configure Amazon Route 53 latency-based routing between the two ALBs so users are always sent to the lowest-latency Region.

Answer

Configure Amazon Route 53 simple routing with both ALB endpoints listed in a single record set so DNS returns both addresses.