Strategy Economics
Blue/Green: 2x infrastructure cost during deploy, near-zero downtime, instant rollback. Best for: critical production services.
Canary: 5-10% extra infrastructure, gradual risk exposure, requires monitoring. Best for: high-traffic services where full deploy is risky.
Rolling: Minimal extra infrastructure, some latency during transition, complex rollback. Best for: stateless microservices.
Cost ranking: Rolling < Canary < Blue/Green. Risk ranking: Blue/Green < Canary < Rolling.