A Jenkins pipeline is a set of automation steps that are built into a Jenkins job. It defines an entire application life cycle from build, test, deploy, and release processes. It is a combination of plugins that support integration and implementation of continuous delivery pipelines.
For example, a Jenkins pipeline might include steps such as:
1. Build: Compile the code and run unit tests
2. Test: Run integration tests
3. Deploy: Push the code to production
4. Release: Notify stakeholders of the successful deployment
5. Monitor: Monitor the application for any errors or performance issues