Retail media representation can improve demand diversification by bringing a retailer's media to advertisers, agencies and buying channels that its own team does not usually reach. The aim is to reduce dependence on a few large buyers, often the retailer's biggest suppliers, and to build a revenue base that holds up when any one of them changes plans. Diversification works across three dimensions at once: who buys, how they buy and where the ads run.
This article looks at why concentration is a risk, the main levers for broadening demand, and how a representation partner fits.
Why is relying on a few buyers risky?
Many retail media programmes start with the retailer's largest suppliers. That makes sense. Those brands already have a commercial relationship with the retailer, they understand its shoppers and they often have trade or marketing budgets to spend. Early revenue can come quickly.
The risk appears as the programme grows. When a large share of ad revenue comes from a small group of buyers, several things can go wrong:
- Budget swings hit hard. If two or three major suppliers cut spend in a quarter, revenue can fall sharply with little warning.
- Pricing power weakens. With few competing buyers, there is less pressure on price, and floors can be harder to hold.
- Advertising gets tangled with trade terms. When ad spend becomes part of supplier negotiations, it can be hard to tell how much is true media demand.
- Unsold inventory stays unsold. Placements outside the big suppliers' priorities may rarely be bought at all.
None of this means supplier demand is bad. It is usually the foundation. The point is that a foundation is not the whole building.
Endemic and non-endemic demand
A useful starting distinction is between endemic and non-endemic advertisers.
What is endemic demand?
Endemic advertisers are brands whose products the retailer sells. A cereal brand advertising on a grocer's site, or a power tool brand on a hardware retailer's app, are endemic. They want to influence purchases on that retailer's shelves, and closed-loop measurement (linking ads to later purchases the retailer can see) is often central to their interest.
What is non-endemic demand?
Non-endemic advertisers do not sell through the retailer but still value its audience. Financial services, insurance, travel, telecoms, automotive and entertainment brands are common examples. They are usually buying reach, context or audience relevance rather than shelf sales.
Non-endemic demand can broaden a retailer's buyer base considerably, but it brings its own questions: which categories are acceptable, how to protect the shopper experience and how to measure value without a product sale on the retailer's own shelves. These are policy decisions for each retailer. In wider industry terms, this is part of what people mean by commerce media, where commerce data and environments support advertising beyond the retailer's own products.
Example (illustrative)
A regional electronics retailer sells most of its ad space to the manufacturers it stocks. Its team adds a set of non-endemic options: contextual packages on "home move" and "back to study" category pages, offered to broadband providers, insurers and furniture brands, with a rule that no competing retailers may buy. The supplier relationships stay intact, and a new group of buyers starts competing for inventory that suppliers rarely prioritised.
Diversifying by deal type
How inventory is sold matters as much as who buys it. Different buyers prefer different structures, and a narrow menu turns some of them away.
| Deal type | What it is | Who it tends to suit |
|---|---|---|
| Direct sold campaigns | Negotiated directly between retailer and advertiser | Large suppliers and long-standing partners |
| Programmatic guaranteed | Reserved inventory at a fixed price, delivered through programmatic systems | Buyers who need certainty on delivery and cost |
| Private marketplace | Invite-only auction for selected buyers | Buyers who want premium access with price flexibility |
| Curated deals and packages | Inventory grouped by audience, context or theme | Agencies planning against a goal rather than a single site |
| Open programmatic | Wider auction access, usually with floors | Filling remaining inventory and price discovery |
A retailer with only direct campaigns relies on its sales team's reach. Adding programmatic deal types lets buyers who work mainly through programmatic systems take part without a separate negotiation each time. For more on how PMP and PG deals affect revenue, see how PMP and PG deals redefine publisher revenue streams.
Diversifying by channel
The third dimension is where the ads run. Onsite placements, such as search results, category pages and product pages, are the core of most programmes. But buyers plan across channels, and a retailer that offers only one channel can miss budgets planned elsewhere.
- Web and app. Many retailers have both, with different formats and user behaviour. Offering them separately and together gives buyers choice.
- Video and CTV. Where a retailer has video content, or works with partners to extend reach to CTV advertising (ads on internet-connected TVs), it can open budgets planned for video.
- Offsite extensions. Some retailers use their audience knowledge to help advertisers reach shoppers on other sites and apps, within consent rules.
Each channel needs its own measurement approach and rules. Adding channels faster than you can support them well tends to create more problems than revenue.
Common mistakes when diversifying
Analysis
These are common patterns in media sales generally, offered as practical guidance rather than research findings.
- Opening the door without rules. Non-endemic demand needs category and competitor policies agreed first.
- Cutting prices to attract new buyers. Discounting can damage the value perception that supplier buyers already accept.
- Treating all buyers the same. Endemic and non-endemic buyers often want different reporting.
- Measuring only total revenue. Track the share of revenue from your top buyers over time. That is the real diversification signal.
Where a representation partner helps
A retailer's in-house team usually knows its suppliers well. What it may lack is reach into agencies, trading desks and brands outside its own categories, or the time to package inventory for each of them. That is the gap a representation partner is designed to fill.
IncrementX is a global media representation partner, and retail media is a new area of focus for us. On our retail media representation page we describe how a representation partner can help retailers bring their media to more buyers. In practice, the work can include understanding the inventory, mapping it to likely demand, packaging it and aligning it with advertisers. Our Demand Marketplace connects represented inventory with brands, agencies, DSPs, trading desks and programmatic buyers across web, app, video, CTV, OTT, native and rich media, through deal types including PMP, PG, audience, contextual, custom deals and curated packages.
Representation works alongside a retailer's own sales team rather than replacing it. Supplier relationships stay where they are, while the partner focuses on demand the retailer does not already cover. For the general version of this topic, see media representation and demand diversification, and for how representation connects retailers with buyers, read retail media representation and advertiser demand.
A quick diversification health check
- Do you know what share of ad revenue comes from your top five buyers?
- Do you have a written policy on non-endemic categories and competitors?
- Can buyers reach your inventory through at least one programmatic deal type?
- Is inventory outside your largest suppliers' priorities being offered to anyone?
- Do you offer more than one channel, with reporting that suits each?
Diversification is rarely a single project. It is a habit of asking, each quarter, who else could value your media and whether you have made it easy for them to buy.