[nivertech]

BTW, the original Royce' waterfall paper didn't promoted it, but instead presented it as an anti-pattern. But even it shown feedback loops (i.e. going backward to the previous phases), which are kind of iterations.

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original paper by Winston Royce

http://www-scf.usc.edu/~csci201/lectures/Lecture11/royce1970...

A Summary of the Waterfall Paper

https://medium.com/@milo.todorovich/a-summary-of-the-waterfa...

WaterfallProcess - Martin Fowler

https://martinfowler.com/bliki/WaterfallProcess.html