Jenkins is a popular automation server used to build continuous integration and continuous delivery pipelines.

Without CI/CD, developers may need to manually build applications, run tests, create deployment packages, and upload them to servers. Jenkins can automate these repetitive processes.

A typical pipeline can follow this workflow:

Developer → Git → Jenkins → Build → Test → Docker → Deployment

Whenever new code is pushed to a repository, Jenkins can automatically trigger a pipeline. The pipeline can compile the application, execute automated tests, build a Docker image, and deploy the application to a server or Kubernetes cluster.

This automation reduces manual errors and allows teams to deliver software more frequently.