…and “What is Architecture?:”
When we say Information Architecture (IA) we are really talking about everything you can define about a solution without specifying the underlying system (the raw plumbing) or specifying the particular user interface that will be employed to deliver and manipulate the information. By thinking about the architecture of how information is used, how it flows, and how it fits within the user’s world (its context), you can capture the essence of how to build a system that is not only intuitive but futureproof.
–MAYA Design: What is Information Architecture?