Prototypes

Posted on April 13, 2009 by

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One of the tools and techniques of the Collect Requirements process described in the fourth edition PMBOK® is Prototypes. They are a working model of a product that allows for feedback before producing the final product. Feedback cycles may be utilized in which people (such as stakeholders) can provide input, and then a revised model can be presented for further input and revisions. For example, Katy is trying to bake a batch of chocolate chip cookies to be entered in an upcoming cookie contest. She bakes an experimental batch and asks her family for feedback. They tell her that she needs more chocolate chips in the cookies, and that they need to be chewier. Katy revises her recipe and bakes another batch for her family. This time they suggest that she make the cookies larger and a little less sweet. After a few more iterations, Katy believes she has the recipe for a winning chocolate chip cookie.