Continuous delivery (CD) is an approach to software engineering based on producing software in short cycles. By developing in short cycles, teams can reliably release their software at any time. With CD, development teams can build, test, and release software faster and more frequently. As a result, they can reduce the cost, time, and risk of delivering each change. A repeatable deployment process is important for continuous delivery. In continuous delivery, which can be looked at as an extension of continuous integration, “developers frequently hand off new code to the quality assurance (QA) and operations teams for testing,” as described by TechTarget.
Continuous delivery is the second part of continuous integration / continuous delivery, or CI/CD, a practice that enables application development teams to release incremental code changes to production quickly and regularly.