From DiWiki.com

An Extended Enterprise is a loosely coupled, self-organizing network of firms... The notion of the Extended Enterprise has taken on more importance as firms have become more specialized and inter-connected, trade has become more global, processes have become more standardized and information has become ubiquitous.

... http://en.wikipedia.org/wiki/Extended_Enterprise

Jfayel point of view... "Extended enterprise goes today far beyond the only supply chain to include for instance... ... Workers2.0 ... Customers2.0 ... Social2.0 ... maybe already Government2.0 or Competitors2.0 ..."