What Is Information Architecture?

Information architecture specifies the design of information exchange between the user and the product, in particular:

How the user interacts with the product.
What information the product presents to the user.
What information the user supplies to the product.

Use cases and screen mockups are examples of information architecture specifications, since they both describe user interaction and information exchange.

User interaction designers and user interface designers are information architects.

FYI, the Wikipedia entry on information architecture notes:

An alternate definition of information architecture exists within the context of information system design, in which information architecture refers to data modeling and the analysis and design of the information in the system, concentrating on entities and their interdependencies.

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