Do we need an Agile Maturity Model?

In a post on developer works Scott Ambler proposes a “Agile Process Maturity Model” (APMM), if you are asking “WTF is that supposed to be?” Scott tries to answer that in his first sentence: The goal of the Agile Process Maturity Model (APMM) is to provide a framework which provides context for the plethora of [...]