Database migration: AWS DMS (Database Migration Service) replicates on-premises/other cloud databases. Heterogeneous conversion (MySQL→Aurora), homogeneous replication. Continuous replication possible.
Cross-Region replication: Aurora Global Database, RDS read replicas (cross-region). Asynchronous replication. RPO considerations. S3 Cross-Region Replication (CRR) automatic object replication.
Backup strategies: automated retention, manual snapshots, backup automation scripts, AWS Backup service central orchestration.