DevSecOps weaves security into every stage of development to cut breaches, downtime, and reputational damage; teams should shift left, automate testing with tools like OWASP ZAP, Burp Suite, and SonarQube, manage policies as code, and enable continuous monitoring (e.g., Splunk/ELK). Using SAST, DAST, and IAM across CI/CD reduces risk, protects sensitive data, and preserves speed through consistent, automated controls.