Jenkins is an open-source automation server, written in Java, that builds and tests code every time it changes. DevOps teams use it for continuous integration and continuous deployment, known together as CI/CD.
After a build passes its tests, Jenkins can deploy it to environments such as staging and production. More than 2,000 community plugins connect Jenkins to tools like Git, Docker and cloud platforms. It runs on most operating systems, and one controller can spread builds across many agent machines.
Teams use it to catch problems early, cut manual errors and ship software faster.
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