Are there any differences between the Rational Unified Process (RUP) and the Unified Process (UP)? What does "Rational" mean, in this context?
1I thought Rational is the name of a company?– tp1Nov 17, 2011 at 20:05
The Unified Process is a generic name for a family of process models that meet a number of criteria, such as being iterative and incremental, driven by use cases, and focus on addressing risks early. It defines four project phases: Inception, Elaboration, Construction, and Transition.
The Rational Unified Process is a refinement of the Unified Process that was created by Rational Software (now owned by IBM). It uses a series of software tools along with a process framework to define how to carry out the activities needed to run a software project, yet still provides a framework for tailoring to meet an organization's (or team's) needs.
Other refinements on the Unified Process include Scott Ambler's Agile Unified Process and the Eclipse Foundation's Open Unified Process.
It seems I started writing my answer while you were writing yours, but I posted first (didn't get the familiar notification that another answer was up while writing). Just a clarification, wouldn't dare submit and answer saying exactly the same as another answer (and in this case less). I've deleted mine, as yours is more informative (and mine a little snarky).– yannisNov 17, 2011 at 18:32
Yeah. I got the notification that there was another answer posted as I was getting the links to the AUP and OUP. I figured since I was almost done, I was just going to post it anyway.– Thomas Owens ♦Nov 17, 2011 at 18:34
2well, to be fair, and based on the chronology exposed in USDP by the authors of UP, first RUP was created and then UP was published as a generalization of it (anyway, it’s the same people behind both). Jun 28, 2019 at 7:52