An in-depth guide to migrating from IAB Content Taxonomy 2.2 to 3.0 — with expanded CTV, podcast, game, and app categories, richer news classification, and a detailed taxonomy mapping strategy using descriptive vectors.
What changed between IAB Content Taxonomy 2.0 and 2.1: no categories were added or removed, but many nodes gained the new SCD (Special Category Data) extension and what that means for data handling in the supply chain.
What changed between IAB Content Taxonomy 2.1 and 2.2: introduction of Sensitive Topics and a four-level Brand Suitability & Risk framework that lets advertisers and platforms be more nuanced about what content is appropriate for ads.
A complete guide to migrating from IAB Taxonomy 1.0 to 2.0, covering new categories, mapping challenges, and tools for accurate website and domain categorization.