> "I've never done waterfall" Yes, that's correct, I've never done waterfall either. By definition [1] "The waterfall model has, at least, five to seven phases

> "I've never done waterfall" Yes, that's correct, I've never done waterfall either. By definition [1] "The waterfall model has, at least, five to seven phases that follow in strict linear order, where a phase can’t begin until the previous phase has been completed." (emphasis mine) - we never did that, and I never heard of anybody following that model. All these steps has to overlap - it is not possible to write good requirements without having at least draft design etc - and they surely did. [1] https://www.projectmanager.com/waterfall-methodology https://www.projectmanager.com/waterfall-methodology