"A long time ago in a galaxy far, far away, a group of Jenkins contributors decided to reinvent the way Jenkins jobs are defined and how they operate." (A couple of years in software terms is a lot, and Jenkins contributors are indeed spread throughout the galaxy).
The new type of jobs became known as Jenkins pipeline. It was received well by the community, and the adoption started almost instantly. Everything was excellent, and the benefits of using Pipeline compared to FreeStyle jobs were evident from the start. However, it wasn't easy for everyone to adopt Pipeline. Those who were used to scripting, and especially those familiar with Groovy, had no difficulties to switch. But, many used Jenkins ...
