Retail Media: The Essential 2026 Guide for Ecommerce Brands

TL;DR

Retail media is advertising that runs on retailer-owned channels (websites, apps, stores) using first-party purchase data for targeting and measurement. If you run Sponsored Products on Amazon, you’re already doing it. The category is projected to hit $203.9 billion globally in 2026, making it the third wave of digital advertising after search and social. For ecommerce brands, understanding retail media is no longer optional.

What Is Retail Media?

Retail media is advertising inventory sold by retailers to brands across digital and physical channels, targeted using first-party shopper data and measured through closed-loop attribution that connects ad views to actual purchases.

The simplest way to think about it: retail media is the digital equivalent of prime shelf space in a physical store. When a brand pays for an endcap display at Target or a product demo station at Costco, that’s retail media in its oldest form. The digital version includes the sponsored product listings you see when searching on Amazon, the banner ads on Walmart.com, and the promoted items in your Instacart cart.

Here’s the thing most glossary pages won’t tell you directly: if you run Sponsored Products campaigns on Amazon, you are already participating in retail media. Amazon Advertising is the world’s largest retail media network. Every bid you place, every keyword you target, every Sponsored Brands ad you create exists within this framework.

Understanding that context matters because retail media isn’t just a buzzword for ad-tech conferences. It shapes how your products get discovered, how much you pay for visibility, and increasingly, whether you can compete at all on major marketplaces.

Explore Amazon advertising services to see how retail media strategy translates into day-to-day campaign management.

How Retail Media Works

Three components make retail media function differently from traditional digital advertising: the ad placements themselves, the data powering them, and the measurement connecting everything.

Three Types of Ad Placements

Onsite advertising lives within a retailer’s own digital properties. Sponsored Products on Amazon, search ads on Walmart.com, promoted listings on Instacart. These placements catch shoppers at or near the point of purchase, which is why they tend to convert at higher rates than display ads elsewhere.

Offsite advertising uses a retailer’s data to target shoppers on third-party channels like social media, CTV platforms, or the open web. Amazon DSP is the clearest example: it lets brands retarget Amazon shoppers across websites, streaming platforms, and apps outside of Amazon itself. For a deeper look at how this works, see our Amazon DSP guide.

In-store advertising includes digital screens, audio ads, and smart cart displays inside physical retail locations. Walmart, Kroger, and Target have all invested heavily in connecting their in-store media to the same data systems that power their digital ads.

The First-Party Data Advantage

This is the core reason retail media has grown so fast. Retailers know what shoppers actually buy. Not what they click on, not what they “like,” not what they add to a wishlist on a random website. Actual purchase history, search behavior, basket composition, repeat purchase frequency, and average order value.

No other advertising channel has access to this depth of transaction data. With third-party cookies declining in value and signal loss increasing across the open web, first-party purchase data has become the most reliable foundation for ad targeting.

Closed-Loop Attribution

Traditional digital advertising has a measurement gap. You can see that someone clicked an ad on Google, but connecting that click to a purchase that happens days later on a different device is messy. Retail media closes that loop because the ad exposure and the purchase happen within the same ecosystem.

When a shopper sees a Sponsored Products ad on Amazon and buys that product three days later, Amazon connects those events directly. No guesswork, no probabilistic modeling. This closed-loop attribution is what makes retail media so attractive to CFOs who want proof that ad dollars drive actual revenue.

That said, measurement gets complicated fast when brands advertise across multiple retail media networks simultaneously. Our guide on ad platform conversion discrepancies covers the practical side of that challenge.

Retail Media Networks: The Key Players

A retail media network (RMN) is the platform a retailer builds to sell ad space to brands. It provides the infrastructure, data, and inventory that make retail media possible. Think of the retailer as the landlord, the RMN as the property management system, and the brand as the tenant paying for premium space.

There are now over 80 retail media networks in the United States alone. Here are the ones that matter most.

Amazon Ads dominates with approximately 69% of US retail media market share and an estimated $88.6 billion in US advertising revenue in 2026. Amazon was the first to build a large-scale retail advertising ecosystem using first-party data, search ads, a demand-side platform, and closed-loop attribution. Its ad stack spans Sponsored Products, Sponsored Brands, Sponsored Display, Amazon DSP, and a growing CTV footprint through Prime Video and Fire TV.

Walmart Connect is the second-largest and has been the fastest-growing network in the 2024 to 2026 cycle. Walmart Connect CPCs run roughly 55% lower than Amazon, making it attractive for brands testing retail media at lower entry costs.

Instacart Ads delivers 18 to 25% conversion rates on sponsored placements, likely because shoppers on Instacart are building grocery lists with immediate purchase intent.

Kroger Precision Marketing, Target Roundel, Best Buy Retail Media+, DoorDash Ads, and Uber Advertising occupy the secondary tier. In profit ROI specifically, both Kroger ($2.35) and Instacart ($1.85) outperform Amazon, Walmart, and Target according to recent benchmarks.

For brands selling on Amazon, the performance benchmark to know: US Amazon Sponsored Products ads generated a $5.08 ROAS in Q3 2025 according to data from Pacvue and Helium 10. A healthy ROAS of 3x to 6x on sponsored product placements is typical when detail pages convert well. Below 2x usually signals a listing or pricing problem, not a bidding problem.

Market Size and Why Retail Media Matters Now

The numbers are hard to ignore.

Retail media is expected to reach a $203.9 billion global market size in 2026, a 14% jump from the previous year. In the US alone, retail media ad spending will approach $69.33 billion in 2026, up from $58.79 billion in 2025.

To put that in perspective, retail media is projected to overtake combined linear and connected TV ad spend in 2026 according to WARC. It now accounts for roughly 18% of total digital ad spend in the US and 16% globally. Three-quarters of US advertisers plan to increase their retail media budgets this year.

The industry has been called the “third wave of digital advertising,” following search and social. That framing is useful because it captures both the scale and the structural shift. Just as Google Ads reshaped how brands thought about intent-based marketing in the 2000s, and Facebook Ads reshaped audience targeting in the 2010s, retail media is reshaping how brands think about commerce-driven advertising in the 2020s.

The catalyst is partly strategic and partly forced. As third-party cookies lose effectiveness and privacy regulations tighten, the retailers holding verified purchase data have become the most valuable advertising partners available. Brands need reach; retailers have the data. That exchange is the engine driving this growth.

Retail Media vs. Commerce Media

These terms get confused constantly, so here’s the distinction.

Retail media is advertising sold by retailers, using retailer data, across retailer-owned or retailer-connected channels. Commerce media is the broader category. It includes retail media but also covers any organization sitting on rich transaction data that monetizes that data by offering targeted advertising access.

Airlines selling ads using traveler booking data, banks targeting offers based on spending patterns, delivery platforms like DoorDash or Uber selling ad placements. These are all commerce media, but they aren’t retail media because the companies aren’t retailers.

The practical takeaway: all retail media is commerce media, but not all commerce media is retail media. US commerce media ad spending (the broader category) is forecast to reach $83.71 billion in 2026 and account for nearly a quarter of all digital ad spending by 2030.

For ecommerce brands, the distinction matters when evaluating where to allocate budget. Retail media networks like Amazon and Walmart connect ad spend directly to product sales. Commerce media platforms outside retail may offer audience reach but lack the same closed-loop purchase attribution.

Common Challenges for Brands

Most guides on retail media read like sales pitches. They skip the hard parts. The reality for brands spending money across these networks is more complicated.

Measurement Fragmentation

According to the IAB, 62% of retail media buyers cite lack of measurement standards as a top challenge. Unlike search or social ads, where metrics are reasonably standardized across platforms, each retail media network has its own reporting definitions, attribution windows, and performance benchmarks.

Advertisers are now working across an average of six networks, projected to reach 11 by the end of 2026. That fragmentation creates operational silos and makes it genuinely difficult to compare performance across channels. As of 2025, only 32% of marketers could measure holistically across channels. The rest are making budget decisions with incomplete data.

Understanding contribution margin becomes critical in this environment because it provides a unified profitability metric that works regardless of which network’s ROAS definition you’re dealing with.

The “Pay to Play” Dynamic

Here’s a stat that rarely appears in vendor marketing materials: 88% of brands feel they are somewhat or heavily influenced by retailers to buy advertising on their networks, according to a report by the Association of National Advertisers.

And 42% of advertisers report questioning their investments in retail media networks, viewing it at times as a valuable advertising tool and at other times as simply a cost of doing business. Practitioners on Reddit and industry forums frequently describe retail media budgets as “table stakes” for maintaining distribution and visibility on major platforms rather than purely discretionary growth investments.

The majority of respondents in the ANA study noted their retail media budgets are not incremental. They come from existing advertiser budgets, with a common fear being that dollars intended to drive brand growth are instead subsidizing sales from existing customers.

Transparency Gaps

When researchers asked verified brands whether knowing a retailer’s ad-tech stack would influence their spending decisions, 54% said it would strongly influence their decisions and 34% said somewhat. Only 6% said it wouldn’t matter. Brands are beginning to withhold spending from platforms that can’t demonstrate true incremental value.

Managed-service-only models (where the retailer controls campaign execution rather than giving brands self-service access) create additional friction for sophisticated advertisers used to the immediacy and control of platforms like Google or Meta.

What Retail Media Means for Amazon and D2C Sellers

If you sell on Amazon, retail media is not abstract. It is the system you operate within every day.

Amazon Advertising is the world’s dominant retail media network. Every Sponsored Products campaign, every Sponsored Brands placement, every DSP buy, and every Amazon Marketing Cloud analysis is retail media in action. Amazon was the first to build this ecosystem at scale, and it remains the platform where most ecommerce brands get their first real exposure to the concept.

The Rank-and-Ads Flywheel

On Amazon specifically, retail media creates a compounding effect. Paid visibility through sponsored ads drives sales velocity. Sales velocity improves organic ranking. Better organic ranking reduces long-term dependence on paid clicks, which lowers your total advertising cost of sale over time.

This is why scaling Amazon sales profitably requires thinking beyond individual campaign ROAS. The real return on retail media spend includes the organic rank gains that compound over months, not just the attributed sales in this week’s report.

Research suggests that new product launches and upper-funnel retail media advertising are particularly effective for small brands, while medium and large brands benefit most from lower-funnel advertising. That distinction should shape how you structure campaigns at different growth stages. Our guide on intent-based campaign architecture covers the practical setup.

Connecting Amazon to D2C

For brands selling both on Amazon and through their own Shopify or WooCommerce store, retail media strategy doesn’t exist in isolation. The shopper who discovers your product through a Sponsored Products ad on Amazon may later search for your brand on Google and buy directly from your website. Or vice versa.

Half of brand and agency marketers worldwide say their top Amazon retail media priority is improving ROI and efficiency of existing spend, according to November 2025 data from Skai and Stratably. That efficiency often comes from coordinating Amazon retail media with D2C channel advertising so that the two channels reinforce each other instead of cannibalizing.

The brands growing fastest in 2026 are the ones treating retail media not as a siloed Amazon tactic but as one part of a unified growth system that includes Google, Meta, CRO, and inventory planning working together.

Quick Reference Table

Term	Definition	Example
Retail media	Advertising sold by retailers using first-party shopper data	Sponsored Products on Amazon
Retail media network (RMN)	The platform a retailer uses to sell ad inventory	Amazon Ads, Walmart Connect, Target Roundel
Onsite ads	Placements within a retailer’s website or app	Search ads on Walmart.com
Offsite ads	Retailer-data-targeted ads on third-party channels	Amazon DSP campaigns on external websites
In-store ads	Advertising in physical retail locations	Digital screens in Kroger stores
First-party data	Purchase and behavioral data collected directly by the retailer	Amazon knows what you searched, browsed, and bought
Closed-loop attribution	Connecting ad exposure to verified purchase within the same ecosystem	Seeing that a Sponsored Products click led to a sale 3 days later
Commerce media	Broader category including non-retail transaction-data advertising	Uber Advertising, airline loyalty ad programs

Ready to Build Your Retail Media Strategy?

Whether you’re running Amazon PPC for the first time or managing campaigns across multiple retail media networks, the fundamentals come down to data, structure, and profitability governance. A free brand audit can identify gaps in your current approach and map out a 90-day plan for improving retail media performance across your channels.

FAQ

Is Amazon Advertising considered retail media?

Yes. Amazon Advertising is the largest retail media network in the world, commanding roughly 69% of US retail media market share. Every Sponsored Products, Sponsored Brands, Sponsored Display, and Amazon DSP campaign is retail media by definition.

What is the difference between retail media and traditional digital advertising?

The key differences are data and attribution. Retail media uses first-party purchase data for targeting (what people actually buy, not just what they click on) and offers closed-loop attribution that connects ad views to verified sales within the same platform. Traditional digital advertising relies more heavily on third-party data and probabilistic attribution models.

Why is retail media growing so fast?

Three factors are driving growth simultaneously: the decline of third-party cookies makes retailer first-party data more valuable, the closed-loop attribution appeals to CFOs demanding measurement accountability, and the sheer scale of ecommerce gives retailers enormous audiences to monetize. Global retail media spending is projected to reach $203.9 billion in 2026.

Do small brands need to invest in retail media?

For brands selling on Amazon or other major marketplaces, retail media spending is increasingly a requirement for visibility rather than an optional growth tactic. Research shows that new product launches and upper-funnel retail media advertising are particularly effective for small brands, meaning the investment can be especially productive early in a product’s lifecycle.

What are the biggest challenges with retail media?

Measurement fragmentation tops the list, with 62% of buyers citing lack of standardization. Other common challenges include feeling pressured to spend (88% of brands report this), budget allocation tensions between brand marketing and retail media, and difficulty proving incrementality across multiple networks.

How many retail media networks should a brand advertise on?

There is no universal answer, but be aware of the complexity cost. Advertisers currently work across an average of six networks, heading toward 11. Each network has different reporting standards, attribution models, and optimization levers. Most brands get better results by mastering one or two networks deeply before expanding.

What is the difference between retail media and commerce media?

Retail media is a subset of commerce media. Retail media specifically involves retailers selling ad inventory using their shopper data. Commerce media is the broader category that includes any organization with rich transaction data (airlines, banks, delivery platforms) monetizing that data through advertising.

What ROAS should I expect from retail media on Amazon?

For Sponsored Products specifically, a healthy ROAS typically falls between 3x and 6x when product detail pages convert well. Amazon Sponsored Products averaged a $5.08 ROAS in Q3 2025. If ROAS falls below 2x, the problem is usually the listing or pricing rather than the bidding strategy.