DevSecOps integrates security practices directly into the DevOps pipeline, transforming security from a post-deployment checkpoint into a continuous, automated responsibility shared across development, operations, and security teams. The discipline emerged as organizations recognized that traditional security gates—performed manually at the end of development—were too slow and reactive for modern continuous delivery workflows. At its core, DevSecOps embeds automatic security scanning, policy enforcement, and vulnerability remediation into every stage of the software development lifecycle, enabling teams to ship faster without sacrificing security. The critical mindset shift: security becomes "shift-left" rather than "shift-blame," where finding issues early in development is exponentially cheaper and faster than discovering them in production.