Test disaster recovery using AWS Elastic Disaster Recovery (DRS) for a web application hosted on EC2.

1. Setup:
   • Deploy a sample web application on an EC2 instance in the primary region (e.g., us-east-1).
   • Configure AWS Elastic Disaster Recovery to replicate the EC2 instance to a secondary region (e.g., us-west-2).
2. Steps:
   • Replication: Enable continuous block-level replication using AWS DRS. Confirm replication status in the AWS DRS console.
   • Test Failover: Trigger a "Test Drill" in AWS DRS, simulating a failover by launching the replicated instance in the secondary region.
   • Validation: Access the application via the secondary region's public IP or DNS to verify functionality.
3. Outcome:
   • Confirm that the application is operational in the secondary region.
   • Review metrics for failover time and performance.
   • Terminate the failover instance after testing to avoid costs.