What Is a Commerce Media Network?

Written by

Mark Kapczynski

Published on

October 7, 2025

In the ever-evolving world of digital advertising, a new player has emerged—Commerce Media Networks. But what exactly are they, and why are they reshaping the future of marketing?

Defining Commerce Media Networks

A Commerce Media Network (CMN) is a platform that allows retailers and marketplaces to monetize their digital real estate by offering advertising opportunities powered by first-party data. These networks enable brands to reach consumers at or near the point of purchase—across websites, apps, email, and even in-store screens.

Think of it as the fusion of retail media, programmatic advertising, and e-commerce—all rolled into one.

Key Components of a CMN

  • Retailer-Owned Inventory: Ads appear on the retailer’s owned and operated properties.
  • First-Party Data: Targeting is based on real shopping behavior and purchase history.
  • Closed-Loop Measurement: Advertisers can track performance from impression to conversion.

Why It Matters

As third-party cookies disappear and privacy regulations tighten, CMNs offer a privacy-safe, high-ROI alternative. They empower retailers to become media companies and give brands a direct line to high-intent shoppers.