Continuous Integration and Continuous Delivery (CI/CD) pipelines are essential for efficiently transitioning software changes from development to production, ensuring reliability and speed in deployment. The Harness eBook on CI/CD pipeline patterns explores common strategies that organizations use to design these pipelines, emphasizing the importance of having a fast, safe, and repeatable workflow for software delivery. Pipelines transform source code into builds, which are then tested and deployed across environments until they reach end-users. The book highlights the significance of choosing the right pipeline strategy based on various factors such as environments, tests, services, and manual approvals, and it outlines different design patterns like the Button Push Pattern, Test Automation Pattern, and Full Approval Pattern, each offering its benefits and challenges. By examining these patterns, the eBook helps organizations tailor their CI/CD processes to meet specific needs, while encouraging best practices for achieving efficient software deployment.