Information Architecture
The structural design of a product's content and navigation — how information is organized, labeled, and grouped so people can find it.
Information architecture (IA) is the organizing logic beneath a product: the categories, the navigation, the labels, and the relationships between pages. Good IA matches the user's mental model, so people find what they need without thinking about the structure at all.
IA is expressed in artifacts like sitemaps and navigation schemes, and it is validated with methods like card sorting and tree testing. When IA is wrong, no amount of visual polish saves it — users simply cannot find things, and search becomes a crutch for a broken structure.
Related terms
SitemapA diagram of all the pages in a website or app and how they relate hierarchically — the blueprint of its structure and navigation.User FlowA map of the sequence of steps and decisions a user moves through to complete a task, from entry point to goal.UX DesignThe practice of shaping how a product feels to use — its flows, structure, and logic — so people reach their goal with the least friction.WireframingSketching the low-fidelity skeleton of a screen — layout, content blocks, and hierarchy — before any visual styling is applied.