Summary notes from the AWS Builders Library article. Key ideas: - **Shift-left testing**: run automated tests early in the pipeline. - **Pre-production**: a last stop before production, using production configuration to catch config/dependency issues. - **Progressive rollout**: start small (one-box / canary), then expand based on metrics and alarms. - **Deployment hygiene**: automated post-deploy checks to ensure the service starts, serves traffic, and capacity is sufficient. - **Synthetic monitoring**: frequent synthetic tests to validate health and dependencies continuously. - **Automatic rollback**: on failed post-deploy checks or customer-impacting alarms. Notable terms: - Canary deployments - Cell-based deployments - Synthetic tests - Metric/alarm-based deployment gates See also: - [[Automating safe, hands-off deployments (AWS Builders Library), Jan 28, 2026]] - [[CD pipelines as safety rails for LLM-written code, Jan 28, 2026]] References: - https://aws.amazon.com/builders-library/going-faster-with-continuous-delivery/