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# Opinion: AI research and dark social are breaking B2B ad measurement
- URL: https://www.medianexis.com/opinion-ai-research-and-dark-social-are-breaking-b2b-ad-measurement/
- Published: 2026-10-27T14:26:21.000Z
- Updated: 2026-10-27T14:26:22.000Z
- Description: AdExchanger Guest argues that B2B buying decisions are shifting into AI assistants, private messages and dark social that ad tech can’t observe, leaving attribution models crediting only the visible fraction of a buyer’s journey.
- Author: The Signals Desk
- Tags: Measurement, AI, AdExchanger Guest, AdExchanger: B2B buying moves beyond ad tech visibility

**Why it matters.** Marketers who keep optimizing to attribution risk misallocating budget toward measurable channels even as the influential decisions move to AI chats and peer shares that attribution can’t see.

*Signal from* [*adexchanger.com*](https://adexchanger.com/?ref=medianexis.com) *·* [*AdExchanger Guest*](https://www.medianexis.com/tag/by-adexchanger-guest/) *·* [*read the original*](https://www.adexchanger.com/data-driven-thinking/b2b-buying-decisions-are-moving-where-ad-tech-cant-see/?ref=medianexis.com)*.*