Information architecture and interaction design shape up.

Information architecture (IA) is the structural design of information to facilitate intuitive access to content. IA is composed of the navigational structure of content areas and elements used for each level of a site. Navigation itself is often based on user flows, which are diagrammed with site maps and wire frames, to clarify all such design elements with a team and refine them into a final solution.

Interaction design refers to application flows that facilitate user tasks-such as clicks, rollovers, and messaging that respond to each user's action. HTML prototypes are used to highlight complex interactions and test the viability of a design.