"Replay" Pipeline Runs with Modifications Usage Typically a Pipeline will be defined inside of the classic Jenkins web UI, or by committing to a Jenkinsfile  in source control. Unfortunately, neither approach is ideal for rapid iteration, or prototyping, of a Pipeline. The "Replay" feature allows for quick modifications and execution of an existing Pipeline without changing the Pipeline configuration or creating a new commit. To use the "Replay" feature: 2. Click "Replay" in the left menu 1. Select a previously completed run in the build history. 78