Information Architecture: For the Web and Beyond, 4th ed. (Rosenfeld/Morville/Arango, O'Reilly 2015) — the canonical IA reference

reference·Scope: business·Status: current

Created 2026-05-22

Claim: The "polar bear book" — Information Architecture: For the Web and Beyond, 4th edition, Rosenfeld / Morville / Arango (O'Reilly, 2015) — remains the canonical IA reference. No 5th edition exists as of May 2026.

Definition from the text:

"Information architecture (IA) is a design discipline that is focused on making information findable and understandable" across products, services, communications, and channels.

Source: https://www.oreilly.com/library/view/information-architecture-4th/9781491913529/

Confidence: Verified.

Caveat: The 4th edition is pre-mobile-first-indexing. The four pillars (organization, labeling, navigation, search systems) remain canonical; specific examples and screenshots are dated. Use for principles; don't cite for 2026 examples.

Referenced by (1)

reference Research brief: Information architecture for service businesses with multiple verticals (piece 6 of 15) · relates-to