Summary
- Multi-stage CI/CD pipelines with approval gates and deployment orchestration.
- Covers four deployment strategies: rolling updates, blue-green, canary, and feature flags, each with trade-offs for downtime, rollback speed, and infrastructure cost Includes approval gate patterns for manual review, time-based delays, and multi-approver workflows across GitHub Actions, GitLab CI, and Azure Pipelines Provides automated rollback mechanisms triggered by health checks and failure detection, plus manual rollback commands for Kubernetes deployments Outlines nine-stage pipeline flow from source checkout through build, test, staging, approval, production deployment, and verification with monitoring integration