A company hosts its website on an Auto Scaling group of Amazon EC2 instances in a single AWS Region and has no database. The company deploys the website to a second Region for growth and disaster recovery. The company wants to distribute traffic across both Regions and ensure traffic is not routed to a Region where the website is unhealthy. Which policy or resource should the company use to meet these requirements?

A Route 53 multivalue answer routing policy allows you to return multiple IP addresses for a single DNS query and perform health checks on each associated resource. This ensures that traffic is only routed to healthy endpoints across both Regions, fulfilling the requirement for distributing traffic and avoiding unhealthy sites. Simple routing policy would not perform health checks, potentially directing traffic to an unhealthy Region. An Application Load Balancer (ALB) is regional. An ALB in one Region cannot directly target EC2 instances or IP addresses in a different Region. Cross-Region load balancing at the ALB level is not supported in this manner.