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The practice of integrating security checks early in the software development process is a fundamental aspect of the DevSecOps model. This approach emphasizes the importance of incorporating security at every stage of the software development lifecycle, rather than treating it as an afterthought. By doing so, teams can identify and mitigate potential security vulnerabilities much earlier, reducing risks and costs associated with later-stage fixes.

DevSecOps ensures that security is a shared responsibility among all team members, including developers, operations personnel, and security professionals. This collaboration promotes a culture where security best practices are part of the development pipeline, allowing for continuous integration and continuous deployment while maintaining a strong security posture.

In contrast, other models like DevOps focus more on the collaboration between development and operations but may not explicitly integrate security measures from the outset. While DevCyberOps and DevSecTestOps suggest variations of integrating security into development, they lack the widespread acceptance and clarity of the DevSecOps model that specifically targets security throughout the entire development lifecycle.