Information Architecture

Information Architecture (IA) is the structuring and organization of content so users find what they're looking for. It's the foundation of good user experience and directly influences SEO through URL structure and internal linking. Core elements: Organization systems (hierarchy, categories), Labeling systems (navigation labels, headings), Navigation systems (main menu, breadcrumbs, sitemap), Search systems (internal search, filters). Methods for IA development: Card sorting, tree testing, user interviews. A flat IA (max. 3 clicks to info) is better than deep hierarchies.