What is the difference between Jenkin's `Replay` and `Rebuild` options?
Rebuild, using the Rebuilder plugin allows a completed job to be re-executed while allowing you to change the parameters, assuming your job is parameterized.
Replay does something similar, except it doesn't show you parameters. Instead, it shows the pipeline code directly. This is helpful when wanting to test changes iteratively as you can click Replay, change one or two lines of code, then let it execute. The job will run using the same parameters as it did the first time it ran/completed.