Jenkins

Jenkins is an open-source automation server providing continuous integration and continuous delivery capabilities through a plug-in ecosystem spanning thousands of integrations with build tools deployment platforms and cloud services. The platform enables automated building testing and deployment of code changes through pipelines defined as code in Jenkinsfiles. Jenkins X provides cloud-native CI/CD for Kubernetes while Jenkins Evergreen provides automatically updated Jenkins instances. Jenkins remains widely deployed despite competition from cloud-native CI/CD platforms due to its flexibility and extensive plugin ecosystem.