Shift left security is a strategy that integrates security testing early in the software development lifecycle to identify and address vulnerabilities before they escalate into costly issues at later stages. This approach aligns with DevSecOps principles, enhancing code quality and reducing the burden on developers by minimizing the time spent on rework and remediation. By incorporating security measures like static and dynamic analysis early on, developers can address vulnerabilities when the code is still fresh in their minds, thereby improving efficiency. The implementation of shift left security involves assessing current processes, educating teams on secure coding practices, and leveraging tools such as Harness Security Testing Orchestration (STO) to automate and streamline security testing within CI/CD pipelines. STO facilitates this process by integrating with numerous security scanners, prioritizing vulnerabilities, and providing AI-driven remediation guidance, all of which help developers focus on effective fixes without additional workload, ultimately fostering a robust security governance framework.