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# Retail media’s measurement mess is piling up on CMOs
- URL: https://www.medianexis.com/retail-medias-measurement-mess-is-piling-up-on-cmos/
- Published: 2026-09-30T19:06:08.000Z
- Updated: 2026-09-30T19:06:08.000Z
- Description: Business Insider’s Lara O’Reilly reports that with over 200 retail media networks now competing for budgets, an ISBA and MediaSense audit of five major UK networks found five different definitions of an “attributed sale.”
- Author: The Signals Desk
- Tags: Retail-media, Lara O'Reilly, Retail media networks as brand-building channels

**Why it matters.** Buyers gain leverage to demand standardized attribution before committing further spend across fragmented retail media networks.

*Signal from* [*businessinsider.com*](https://businessinsider.com/?ref=medianexis.com) *·* [*Lara O'Reilly*](https://www.medianexis.com/tag/by-lara-o-reilly/) *·* [*read the original*](https://www.businessinsider.com/retail-media-boom-lacks-standards-for-marketers-causes-headaches-2026-9?ref=medianexis.com)*.*