Jenkins CI Server

Jenkins is an open-source automation server created by Kohsuke Kawaguchi at Sun Microsystems in 2011 as a fork of the Hudson project, providing continuous integration and continuous delivery capabilities through a plugin-based architecture, enabling development teams to build, test, and deploy applications automatically, with over eighteen hundred community plugins covering source code management, build tools, testing frameworks, deployment platforms, and notification systems, adopted by over one million users and companies including Lyft, Bloomberg, Coursera, and Twitch for their continuous delivery pipelines. The pipeline as code feature uses the Groovy-based DSL to define build, test, and deployment stages in a Jenkinsfile stored alongside application code in version control, enabling reproducible builds, pipeline versioning, code review of pipeline changes, and branching strategies for different deployment environments, with declarative pipeline syntax providing a simplified, opinionated format and scripted pipeline syntax providing full programming power for complex deployment logic. The distributed build architecture supports distributing build jobs across multiple agent nodes through the master-agent model, with the master orchestrating job scheduling and the agents executing build steps, enabling horizontal scaling of build capacity and isolation of build environments through Docker containers, SSH connections, and cloud-based agents through plugins. The plugin ecosystem integrates with virtually every tool in the software development lifecycle including Git, Subversion, Maven, Gradle, Docker, Kubernetes, AWS, Slack, Jira, SonarQube, and Artifactory. The role-based access control. The build history and trends. The test result reporting. The artifact management. Designed by Kohsuke Kawaguchi. Designed for DevOps teams.