This document discusses how to implement DevSecOps practices to safely enable continuous delivery. It advocates shifting security left by integrating security practices into development workflows from design through deployment. This allows security issues to be identified and addressed early before they become costly problems. The document outlines DevSecOps staffing models and provides examples of how practices like automated security testing, secure baselines and templates, and monitoring can help operationalize security and reduce mean time to remediate issues from months to hours.