This article provides a comprehensive guide for deploying a multi-Region disaster recovery solution for Amazon RDS for SQL Server using cross-Region read replicas, Route53, and S3.

• Deploy RDS for SQL Server with active-passive strategy across two AWS Regions
• Use cross-Region read replicas with Distributed Availability Groups for asynchronous replication
• Configure Route53 private hosted zone with CNAME records for database connectivity
• Implement Route53 public hosted zone with failover routing policies for internet traffic
• Use "standby takes over primary" approach with inverted health checks on S3 endpoints
• Health checks monitor S3 file in secondary Region to control manual failover
• Applications in both Regions use private hosted zone records, eliminating failover configuration changes
• Requires manual failover initiation by uploading file to S3 in secondary Region

This blueprint enables organizations to maintain control over cross-Region failover while meeting RPO and RTO requirements for critical SQL Server applications.