The Furious Four

The furious four are a simple tool to show customers the trade-offs to make on an agile project.

Taken from:

The Agile Samurai
How Agile Masters Deliver Great Software
Jonathan Rasmusson, 2010
ISBN-10: 1-934356-58-1
ISBN-13: 978-1-934356-58-6
Version: 2010-9-13

Chapter 5.4 "Be Clear on What’s Going to Give".