Jenkins is a free and open-source automation server. Jenkins helps to automate the non-human part of the software development process, with continuous integration and facilitating technical aspects of continuous delivery. It is a server-based system that runs in servlet containers such as Apache Tomcat.

Jenkins is an open-source automation tool written in Java with plugins built for Continuous Integration purposes. Jenkins is used to building and testing software projects continuously making it easier for developers to integrate changes to the project, and making it easier for users to obtain a fresh build.

The continuous integration software tool is written in the Java programming language for testing and reporting on isolated changes in a larger code base in real-time. The software enables developers to find and solve defects in a code base rapidly and to automate testing of their builds.

Jenkins has become the open-source standard for managing the dev side of DevOps, from source code management to delivering code to production. Jenkins is a continuous integration (CI) and continuous delivery (CD) solution. It is used to continuously build and test software projects, enabling developers to set up a CI/CD environment. Jenkins is well-documented and extremely extensible, with a rich ecosystem of plugins and integrations.