Jenkins

Jenkins is the industry-standard, open-source automation server used to build, test, and deploy software at scale.

Jenkins serves as the backbone of modern DevOps pipelines by automating the repetitive phases of software delivery. Originally released in 2011, this Java-based engine features an ecosystem of over 2,000 plugins that connect to virtually any tool in your stack (from Git and Docker to AWS and Kubernetes). By defining your workflows in code with Jenkinsfiles, you can orchestrate complex, multi-stage build pipelines that automatically validate code changes and push stable releases to production.

https://www.jenkins.io