How do I design cloud resilience and failover to meet a specific RTO and RPO? Set an RTO and RPO for each workload tier, then choose the least costly pattern that meets both: backup and restore for hours of acceptable downtime, pilot light when you can wait for application capacity to start, warm standby for faster recovery, and active/active when your tested targets require traffic to shift between running sites. Then automate failover, so recovery does not depend on a person or on the failing provider’s control plane. AWS’s October 2025 us-east-1 outage showed why. A DynamoDB DNS failure cascaded into EC2, load balancer, Lambda, and STS errors over roughly 14.5 hours, and recovery plans that relied on those services stalled. Control Plane automates failover across locations through health-aware routing and Universal Cloud Identity, so a location failure becomes a routing event instead of a manual runbook.…