YOLO Is a Terrible Strategy for Validating Production Changes

This article discusses the common yet risky practice of using YOLO (You Only Live Once) as a validation strategy for production changes in IT. It highlights how unvalidated changes can break dependent systems and impact customers. The article then presents several effective validation techniques to reduce production risk, including canary releases (gradual traffic shifting), shadow traffic (traffic mirroring), synthetic traffic (simulated user behavior), and smoke tests (quick post-deployment checks). It emphasizes combining these methods to catch issues early and avoid relying on customers to validate changes. The content is focused on software engineering, DevOps best practices, and production reliability.