What is commerce media?
A complete guide
Commerce media is redefining how brands reach buyers and how publishers monetize intent. This guide explains what it is, how it compares to retail media and affiliate, and what a mature commerce media strategy looks like in practice.
QUICK DEFINITION
What is commerce media?
Commerce media is digital advertising based on one principle: intent comes first. This is why it appears in environments where people are actively shopping (researching, comparing, searching for discounts, checking out) rather simply browsing.
- $118.4B
- Projected US commerce media ad spend by 2029, growing at 15.3% CAGR.EMARKETER, US Commerce Media Forecast 2025
- $160B
- Global retail media ad spend forecast for 2027, up from $122B in 2025.GroupM, This Year Next Year, 2024
- 0.59%
- Average conversion rate for display ads — commerce-native intent-based environments consistently outperform.Store Growers, Google Ads Benchmarks 2026
How does CMT define commerce media?
The most important distinction in commerce media is not about ad formats or billing models — it's about the quality of the intent signal. Digital advertising has always been about reaching people; commerce media is about reaching people in the right state of mind.
Walled gardens operate on inferred intent. A product comparison on a retail platform, a BNPL checkout flow, or an autocomplete result in a commerce-focused browser signals something far more specific — a shopper already in purchase mode. The question is whether you're present at that moment.
What is the difference between commerce media and retail media?
Retail media and commerce media are often used interchangeably, but they describe meaningfully different things. Understanding the distinction helps advertisers decide where to invest and helps publishers understand what role they can play in the ecosystem.
Retail media
In CMT ecosystem, retail media is advertising that appears on retailers' owned media, such as their websites or apps. It can be very effective, but is closed by definition — limited to one retailer's audience, formats and rules, especially regarding the performance measurement.
For more, see our resource on retail media explained.
Commerce media
Commerce media, as CMT defines it, takes the idea of reaching consumers near the point of purchase and extends it across the entire open web.
It allows to nurture customer engagement using a broader range of channels and buying stages, without the constraints of a singular retail platform.
| Retail media | Commerce media | |
|---|---|---|
| Who owns the inventory | The retailer (Amazon, Walmart, etc.) | Open web publishers, commerce-adjacent platforms |
| Data source | First-party retailer purchase data (closed) | Contextual commerce signals; own-data or cookieless |
| Ecosystem | Closed — limited to one retailer's audience | Open — reaches buyers across the web |
| Where ads appear | On the retailer's own site and app | BNPL platforms, comparison sites, browser autocomplete, deal sites, and more |
| Incrementality | Often overlaps with existing shoppers | Reaches buyers earlier and outside the retailer's existing audience |
| Transparency | Limited — black-box optimisation, no placement visibility | Placement-level reporting; full transparency |
| Format flexibility | Restricted to retailer-defined formats | Full-funnel: awareness, comparison, checkout |
For most advertisers, retail media and commerce media are complementary, not competing. Retail media drives conversions within high-intent closed environments; commerce media extends that reach to the entire open web, from pre-search discovery to checkout, without being beholden to one platform's rules or audience.
How does commerce media differ from affiliate marketing?
Both models drive traffic to a product page and measure on outcomes — but the similarities end there. Affiliate marketing pays commission on confirmed sales, defaulting to last-click attribution with little visibility into where traffic actually came from. Publishers optimise for any click that converts, not the most valuable shopping context.
Commerce media platforms operate on CPC or CPA with explicit placement-level reporting, focused on expressed commerce intent — people actively searching, comparing, or checking out. The result is more accountable, more scalable, and more brand-safe.
| Affiliate marketing | Commerce media | |
|---|---|---|
| Commercial model | Commission on confirmed sale only | CPC or CPA — pay per visit or per conversion |
| Inventory type | Publisher-controlled, commission-driven | Curated commerce-native placements across the funnel |
| Intent signal | Unknown or inferred after the click | Expressed: active searching, browsing, comparing, checking out |
| Attribution | Last-click only | Placement-level, full-funnel — your own tracker supported |
| Reporting | Outcome-level only, limited visibility | Real-time dashboard with placement, traffic, and revenue data |
| 3rd-party data dependency | Often required for targeting | Not required — fully cookieless by design |
| Brand safety | Variable — depends on publisher quality | Curated inventory with vetted commerce publishers |
How does commerce media work?
Commerce media works by aligning ad delivery to the shopping journey — not to a demographic or cookie-based segment. A user's position in the funnel signals their readiness to engage, and the platform serves the right format at that stage.
The shopping journey has three distinct stages, each calling for a different type of placement:
- TOFU
- Pre-search intentBefore a shopper types a query, commerce media can intercept at the autocomplete layer. Browser-integrated search suggestions place a brand or product in front of a buyer at the earliest possible moment — before competing bids even exist. This is where CMT's proprietary TOFU advantage lies: no walled garden can reach a user at this pre-intent stage.
- MOFU
- Comparison & researchThe shopper is actively evaluating options — reading reviews, comparing prices, visiting deal sites and product aggregators. Tiles, speed dial placements, and sponsored comparison slots capture attention at the moment decisions are being shaped, not after they've been made.
- BOFU
- Checkout & final decisionAt the checkout or payment stage, intent has crystallised. Buy-now-pay-later platforms, coupon aggregators, and cashback sites are conversion-stage commerce environments where a well-placed offer can be the final nudge to purchase — or win back a lost sale to a competitor.
Most retail media networks focus exclusively on the bottom of the funnel — people who are nearly certain to buy. Off-site commerce media extends reach to earlier, higher-volume moments where brand preference is still being formed.
Commerce Media Tech maps this journey across 10 off-site placement categories, from Browser Autocomplete at the top of the funnel to BNPL and Coupon placements at the bottom, giving advertisers continuous coverage of the shopper journey outside walled-garden environments.
How does the CMT commerce media platform work?
Commerce Media Tech is a performance-focused commerce media company, operating a proprietary self-serve DSP built exclusively around shopping environments, and a managed agency service, for brands and agencies alike.
- Monthly visitors
- 400M+
- Commerce placements
- 1,000+
- Active campaigns
- 52,000+
- Countries and territories
- 220+
Who are commerce media solutions for?
Commerce media is relevant to any business that sells products or services online and needs performance-accountable advertising.
In practice, it spans two sides: advertisers putting spend into commerce environments, and publishers monetizing commerce-adjacent audiences.
Commerce media monetization for publishers
Commerce media represents a significant monetization opportunity for publishers whose audiences are actively shopping. Unlike generic programmatic, it monetizes context — the fact that users are searching, comparing, or buying — rather than demographic profiles.
Publishers with commerce-adjacent content command higher CPMs because their inventory is inherently more valuable to performance-focused advertisers.
Publishers entering the ecosystem through CMT gain access to a pre-built demand network, real-time bidding infrastructure, and reporting tooling — without building any of it independently.
What are the key commerce media formats?
According to IAB, commerce media formats span three environments, each with distinct inventory characteristics, intent signals, and measurement considerations.
How is commerce media success measured?
Commerce media is a performance channel and it should be measured like one. That means moving past impression-based vanity metrics and the last-click attribution that distorted e-commerce measurement for a decade.
Applying last-click attribution to full-funnel commerce media undervalues the upper-funnel contribution and will lead to under-investment in the stages where brand preference is actually formed.
Ready to explore commerce media?
Whether you're looking to grow sales, monetize your audience, or build a commerce media product of your own — CMT has a route in.
Frequently Asked Questions
Commerce media is digital advertising anchored to expressed shopping intent — placing ads within environments where people are actively searching, comparing, or buying, rather than inferring purchase intent from general browsing behaviour. It is defined by three properties: expressed intent, performance accountability (ROAS, CPA), and commerce-adjacent placement.
Retail media refers to advertising sold by retailers within their own closed ecosystems — Amazon Sponsored Products, Walmart Connect, and equivalents. Commerce media is the broader category: it includes retail media but also encompasses all commerce-adjacent advertising across the open web, from comparison engines and BNPL platforms to browser autocomplete and deal aggregators. The key difference is ecosystem — closed vs. open.
Affiliate marketing pays commission on a confirmed sale, defaulting to last-click attribution with limited placement transparency. Commerce media operates on CPC or CPA billing with placement-level reporting, and focuses on expressed commerce intent rather than commission-driven traffic. Commerce media is also cookieless by design — it does not require third-party cookies to identify or target buyers.
A commerce media platform is technology infrastructure that enables advertisers to access and buy commerce-native inventory across the open web — with real-time bidding, performance measurement, and attribution in a single system. Commerce Media Tech (CMT) operates a commerce media platform with direct publisher relationships, proprietary ad tech, and full-funnel off-site formats unavailable through standard programmatic channels.
A commerce media strategy is a plan for deploying advertising across commerce-native environments at every stage of the shopping journey — from pre-search discovery (TOFU) through comparison and research (MOFU) to checkout and conversion (BOFU) — measured against KPIs such as ROAS, CPA, or CPC. A mature strategy combines on-site retail media with off-site commerce media solutions to create full-funnel coverage across both closed and open ecosystems.
The commerce media ecosystem encompasses all the participants and technology that enable commerce-adjacent advertising: advertisers and agencies buying inventory, publishers and retailers monetising commerce audiences, commerce media platforms and DSPs connecting supply and demand, and measurement and attribution vendors verifying performance. According to IAB Europe, the ecosystem spans on-site, off-site, and in-store environments — with off-site being the fastest-growing segment.
