CI/CD pipelines have different levels of maturity, with advanced practices becoming more apparent as an organization's pipeline moves towards maturity. Key best practices include improving visibility and transparency through comprehensive dashboards, adopting the DRY principle for reusable templates, implementing modular hierarchical approaches to templating, optimizing build times, addressing flaky tests and large Git repositories, and utilizing dynamic pipelines for increased efficiency and robustness. By adopting these advanced CI/CD best practices, organizations can ensure that their software delivery pipeline is not just a pipeline but a robust engine for continuous improvement.