What is Information Architecture (IA)?

Information Architecture (IA) is both the process and the product of organization of information to facilitate efficient access to that information by its intended audience.

This is my definition for IA which is also my entry for the the Explain IA contest.

Update: I won a copy of Peter Morville’s new book Search Patterns at ExplainIA. I am looking forward to receiving it since the sample chapter I read was promising.