The DevOps movement inspired large, enterprise organizations with agile practices to allow developers to make quick changes, but it was very difficult to get full benefit, as their legacy development process was not designed for supporting short software development delivery cycles and frequent production releases. In order to release software into production quickly but reliably and – most importantly – repeatably, the DevOps movement developed the Continuous Integration/Continuous Delivery (CI/CD) methodology. Jez Humble and David Farley covered these principles and practices in their book “Continuous Delivery: Reliable Software Releases through Build.”
