Making the Decision

After analysis, make explicit decisions documented with clear rationale. Specify not just which tools to use but how they'll be deployed, who's responsible for operations, and what success looks like. Set measurable objectives—reduced vulnerability escape rates, improved mean time to remediation, or increased developer satisfaction. Clear decisions enable accountability and future optimization.

Plan for tool evolution from the start. Security testing requirements change as applications evolve, threats advance, and tools improve. Build flexibility into contracts and architectures. Maintain expertise in multiple approaches even if currently using only one. Regular reassessment ensures tools continue meeting needs as circumstances change.

Remember that tool selection is just the beginning. Successful security testing requires ongoing investment in process improvement, team training, and tool optimization. The best tool poorly implemented delivers less value than an adequate tool well executed. Focus equal attention on implementation excellence as on selection criteria.

The choice between SAST, DAST, and IAST isn't simply technical—it's organizational. The right decision aligns with development culture, operational capabilities, and business objectives. Most organizations ultimately benefit from multiple approaches, but the path to comprehensive coverage varies. By systematically evaluating requirements, constraints, and options, organizations can make informed decisions that improve security posture while respecting practical limitations. The goal isn't perfection but rather continuous improvement in application security through well-chosen and properly implemented testing tools.## Implementing SAST in Your DevSecOps Pipeline

Successfully implementing Static Application Security Testing (SAST) in modern DevSecOps pipelines requires more than simply installing a scanning tool. It demands careful integration with existing development workflows, thoughtful configuration to minimize false positives, and cultural changes that make security everyone's responsibility. This chapter provides a comprehensive guide to implementing SAST effectively, from initial planning through mature optimization, helping you avoid common pitfalls while maximizing security value.