A large company has a business-critical application that runs in a single AWS Region. The application consists of multiple Amazon EC2 instances and an Amazon RDS Multi-AZ DB instance. The EC2 instances run in an Amazon EC2 Auto Scaling group across multiple Availability Zones. A solutions architect is implementing a disaster recovery (DR) plan for the application. The solutions architect has created a pilot light application deployment in a new Region, which is referred to as the DR Region. The DR environment has an Auto Scaling group with a single EC2 instance and a read replica of the RDS DB instance. The solutions architect must automate a failover from the primary application environment to the pilot light environment in the DR Region. Which solution meets these requirements with the MOST operational efficiency?
Select one answer.
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