What Are Retail Media Networks?

Retail Media Networks in Plain English

A retailer already knows who shops, what they search for, and what they buy. A retail media network packages that into an ad product. Instead of paying a publisher and hoping the audience buys, a brand pays the store itself to put its product in front of people who are already shopping.

Three things make an RMN different from other advertising:

• First-party data. Targeting is built on the retailer's own logged-in shoppers and purchase history, not on third-party cookies.
• Close to the sale. Ads sit on the product page, in search results, or in the checkout path, so the shopper is a click from buying.
• Closed-loop reporting. The retailer can tie an ad to an actual order on its own platform, which most other channels cannot.

The brand pays; the retailer earns a high-margin income stream on top of selling goods. That is why so many retailers have built networks of their own.

How a Retail Media Network Works

Almost every network follows the same four steps:

• The retailer collects shopper signals: searches, views, basket adds, purchases.
• The brand picks an audience or placement: a search keyword, a product page, a category, or a segment such as people who bought a competing product.
• The ad is served on the retailer's site or app (on-site), or on other websites and apps using the retailer's audiences (off-site).
• The retailer reports back impressions, clicks, and attributed sales.

Most networks bill in one of two ways. Sponsored placements in search are usually billed per click, with an auction deciding who wins. Display and video are usually billed per thousand impressions (CPM). The details, minimum budgets and reporting windows differ by network, so read each one's own documentation before you plan a budget.

The Main Types of Retail Media Ads

Ad products fall into a few families, whichever retailer you are buying from:

• Sponsored search and product ads that appear in results for a shopper's query, usually paid per click.
• On-site display on home, category and product pages, usually paid per impression.
• Off-site and programmatic ads that follow retailer audiences across the wider internet, including streaming video.
• In-store media such as screens and digital shelf displays, found at retailers with physical stores.

On Amazon, the first family is Sponsored Products, Sponsored Brands and Sponsored Display, and the programmatic family is Amazon DSP. reMKTR runs Amazon DSP as a service; see remktr.com.

What It Looks Like in Practice: Real Amazon DSP Numbers

Amazon runs the retail media network most brands meet first, and its programmatic arm shows how off-site and on-site buying behave side by side. Across 30 advertisers in July 2026 on the Amazon DSP accounts reMKTR manages, the portfolio ran 78.4 million impressions at a $4.00 CPM and delivered 6.04x return on ad spend, with 20.1% of attributed purchases coming from shoppers new to the brand. That is one mixed portfolio in one month, not a forecast and not a promise about your account.

The useful lesson is the method. Those figures come from the platform's own reporting, which is the point of a closed-loop network: you can see what the spend returned, and you can check the result against a holdout instead of trusting a single dashboard.

What Retail Media Networks Don't Tell You

The pages that explain RMNs are, mostly, written by networks, ad-tech vendors and agencies that sell them. That does not make them wrong, but it shapes what gets emphasised. Five things worth knowing before you spend:

• Each network grades its own homework. Attribution windows and definitions differ between retailers, so one network's return on ad spend does not line up cleanly with another's.
• Sales credit overlaps. A shopper who sees a display ad and then clicks a search ad can be counted by both. Ask how overlap is handled.
• Reach is limited to that retailer's shoppers. That is the strength and the ceiling.
• Budgets fragment. Every network has its own console, formats and minimums, which is more work for a small team.
• Incrementality is a separate question from attribution. A sale the shopper would have made anyway still shows up as attributed. A holdout test is how you find out.

A Checklist Before You Spend on Any Network

Use these questions on any network, and on any agency or vendor, including us:

• Which shoppers can this network actually reach, and do they match my customer?
• How is a sale attributed: which window, and click, view, or both?
• Who designs and runs the incrementality test, and is it written into the agreement?
• What is the minimum budget, and is there a self-serve route or only a managed one?
• Can I export the data, or only see it inside the network's dashboard?
• How will I compare this against my other channels using one set of definitions?

Start small, set one clear goal per campaign, and give each test long enough to produce a readable result before you scale it.