Media
Retail media networks and the new rules of co-marketing
Agency holding companies and independents are racing to build measurement bridges that satisfy finance and procurement.

Retail media grew because it promises closed loop signals. It also created a maze of networks, formats, and measurement rules that strain agency operations and brand finance teams. Co marketing across retailers is now a negotiation about data access, creative versioning, and what proof means in a clean room constrained world.
The measurement bridge problem
Brands want to compare retail media performance to other channels without double counting. Retailers want to demonstrate incremental lift without exposing raw transaction data. Agencies sit in the middle trying to build models everyone can defend. The pragmatic path is often a layered approach: controlled tests for major decisions, consistent definitions for weekly steering, and conservative assumptions where data is incomplete.
Co marketing that scales
Reusable creative systems beat one off hero assets. Retail timelines are tight. If packaging, legal footnotes, and retailer specific offers can be templated, throughput improves. Procurement also benefits when fewer bespoke contracts are required for every activation.
Independents and holding companies are both investing here. The difference is often integration depth versus speed. Brands should choose partners based on where they are in retail maturity, not based on generic reputation alone.
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