“Information architecture (or IA) is the science — some would insist art — of defining the structure, organization, navigation, labeling and indexing of a Website. It is the role of the information architect to decide how a site should be structured, what kind of content it should host, and how to accommodate future growth. In short, information architecture defines the backbone of a Website.” (Subha Subramanian – sitepoint) – courtesy of xblog