This book, and indeed the wider extension network in Australia, is replete with examples and models of various extension approaches that are employed by intervening agencies seeking to enable desired change(s) in sustainable production and/or natural resource management. Chapter 1 paints a picture of extension as a policy instrument, or a method or mechanism used by government and government agencies as well as other institutions including business to achieve a desired effect (also see Vanclay and Leach 2006)1. This chapter provides a perspective on extension policy in Australia, a framework in which a national extension policy platform can rest and a process model for negotiation of effective extension policy as an effective instrument for enabling change.