Kano Model

The Kano model is a theory of product development and customer satisfaction developed in the 1980s by Professor Noriaki Kano, which classifies customer preferences into five categories.

What is the Kano Model?
Kano Model
The Complete Guide to the Kano Model
Folding Burritos
Leveraging the Kano Model for Optimal Results
UX Magazine
Understanding the Kano Model – A Tool for Sophisticated Designers
Jared Spool via UIE
Kano Model Analysis: Delivering Products That Delight
MindTools
3 Minute Product Manager: Kano Model (video)
Kevolve Product Management
The Kano Model
Treehouse