Val Yonchev
A visual approach for scoping the most important features of a product/service. It is a drawing of multiple concentric circles, each of which represents an additional layer of details for the product/service. At the core are the generic product/service characteristics (features), followed by minimal conditions circle (must haves), an augmented product circle, a potential circle (differentiations and customer retention features) and additional circles if required.
Check out these great links which can help you dive a little deeper into running the Whole Product Plotting practice with your team, customers or stakeholders.