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Backup & Restore, Pilot Light, Warm Standby, and Multi-Site Active/Active — faster recovery costs more.
Cheapest DR: back up data and restore into a new environment on disaster. Highest RTO/RPO of the four strategies.
Core services (e.g. a replicated database) run minimally in the recovery Region; the rest is provisioned on failover. Lower RTO than backup & restore.
A scaled-down but always-running copy of the full stack in the recovery Region, scaled up on failover. Lower RTO than pilot light.
The workload runs in multiple Regions simultaneously serving traffic; near-zero RTO/RPO at the highest cost and complexity.
A centralised, policy-based service to automate and manage backups across AWS services (and on-premises via Storage Gateway).
Designing across Regions (with Route 53 failover, cross-Region replicas/backups) protects against Region-wide events.
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