I leverage multi-region deployments for disaster recovery by designing an active-passive architecture:

1. Primary Region: Host the main application stack in us-east-1.
2. Secondary Region: Set up a scaled-down version in us-west-2 as a passive standby.
3. Cross-Region Replication: Use S3 CRR and RDS cross-region replication.
4. Failover:
   • Automate DNS failover using Route 53 health checks.
   • Integrate with CloudFormation to spin up additional resources in the secondary region.