deployment

Plan a zero-downtime deployment by selecting a strategy like blue-green or rolling updates to replace instances gradually. This ensures continuous availability by shifting traffic only after new instances pass automated health checks.

Blue-green deployment switches all traffic instantly between two identical environments for quick rollback. Canary deployment gradually routes a subset of traffic to the new version, limiting the blast radius and collecting real user data before full release.

Automated rollback procedures rely on deployment strategies like blue-green to instantly revert traffic to the previous stable environment. Rollbacks are triggered automatically when health checks detect failures in the newly promoted production version.

Use feature flags during a software rollout to deploy code behind toggles for safe progressive exposure and dark launches. This enables controlled A/B testing and allows immediate disabling of features without redeploying or rolling back code.

Rolling deployments update instances one at a time, ensuring each updated instance passes health checks before proceeding to the next. This avoids downtime by keeping old instances running to serve traffic until the new ones are verified.

Multi-environment rollout planning across development, staging, and production is required to ensure predictable and reversible releases. It allows you to validate migrations and test automation steps in staging before promoting to production.