A company serves its website by using an Auto Scaling group of Amazon EC2 instances in a single AWS Region. The website does not require a database. The company is expanding, and the company's engineering team deploys the website to a second Region. The company wants to distribute traffic across both Regions to accommodate growth and for disaster recovery purposes. The solution should not serve traffic from a Region in which the website is unhealthy. Which policy or resource should the company use to meet these requirements?