Leveraging QA teams to improve software delivery pipelines can help reduce delays and increase quality. By facilitating defect prevention and analysis, QA teams can drive the development process towards bug-free code, saving resources and time. This approach involves writing tests first, before coding, to ensure shared understanding of requirements and prevent bugs from entering the system. QA teams can also analyze trends in defects to identify areas that need more attention, making strategic decisions about resource allocation. By shifting the perception of QA from a bottleneck to a facilitator of success, teams can improve their pipeline and deliver high-quality products faster.