U.S. retail media spend is projected to reach nearly 70 billion dollars in 2026, growing faster than any other digital advertising channel. Most reporting frames this as an advertising story. However, it is not. Rather, it is the moment your in-store digital signage network stopped being a marketing tool and started being a revenue line on the P&L.
In several deployments across the United States and Latin America, we have found that retailers underestimate by an order of magnitude what their existing screen footprint is actually worth once it gets connected to a unified data layer. The screen at the end of aisle 4 has always been an asset. However, most retailers are running it as a cost center.
Retail media networks did not turn digital signage into advertising. They turned digital signage into inventory. And the retailers who treat their screens as inventory will own the next decade of brick-and-mortar revenue.
The Shift Underneath the 70 Billion Dollar Number
The headline figure is real. Specifically, connected screens, AI-enabled shopping carts, and loyalty-linked apps are projected to grow at an 11.62 percent CAGR through 2031, more than 80 percent faster than the broader retail media market. Furthermore, retailer-owned networks already control 67.45 percent of total retail media spend, and the in-store segment is the fastest-growing slice within that share.
What changed is not the screens. In fact, the screens have been there for fifteen years. What changed is that retailers finally have the data layer to make them measurable. For example, Walmart Connect, with roughly 170,000 in-store screens across 4,600 stores, can now tie an impression on a bakery aisle screen to a transaction at the register. Similarly, Target’s Roundel does the same at scale across its network. As a result, the screen is no longer a brand-awareness placeholder. It is a measured impression with attribution back to the basket.
The honest implication for retailers outside the top 10 is uncomfortable. The window to launch a viable retail media network is closing, and the gating factor is not budget. Rather, it is whether your in-store hardware can produce attributable impressions.
Why Most Retailer Screens Are Failing the Inventory Test
Walk into a regional grocery chain in 2026 and you will see digital signage on the front-end, the deli, the bakery, and end caps. The screens are running. They are connected. Yet they remain completely invisible to the retail media stack the chain is trying to build.
The problem is structural. Most legacy digital signage was deployed for one-way content distribution, not measurable advertising inventory. The screens display what the marketing team scheduled. They do not report viewer count, dwell time, ad impressions, contextual relevance, or attribution. In effect, those screens are TVs in stores. Not inventory.
From the deployment side, three structural gaps consistently keep retailer signage out of the retail media economy.
Gap 1: No Measurement Layer
If a screen cannot report how many shoppers saw an ad, advertisers will not pay for it. Therefore, computer vision audience measurement, dwell-time sensors, and proximity beacons are now table-stakes for any screen that wants to qualify as inventory. Most legacy CMS platforms cannot capture or report this data without a hardware layer added on top.
Gap 2: No Closed-Loop Attribution
The 70 billion dollar retail media economy runs on closed-loop attribution. For example, the advertiser ran an ad on screen 12 in store 47, and 8.4 percent of shoppers exposed bought the product within 14 days. However, without a connection between the screen, the loyalty system, and the POS, the retailer cannot prove that the loop closed. No proof, no premium pricing.
Gap 3: No Contextual Targeting
The bakery screen serving a generic electronics promo is the visual proof that the network is not yet inventory. By contrast, Walmart explicitly emphasizes contextual relevance in its in-store rollout: bakery screens serve food messages, not generic electronics promotions. That is not a creative choice. Rather, it is a structural requirement of monetizable inventory.
The Adoption Layer: What Changes When Signage Becomes Revenue
This is the part vendors will not put on a slide. The decision to launch an in-store retail media network is not a technology decision. Rather, it is an operating-model change that touches store operations, marketing, IT, finance, and merchant relationships at the same time.
The Operating Model Has to Shift
In a pre-RMN world, the marketing team owned the screens and decided what played on them. By contrast, in an RMN world, an ad operations team owns the inventory, sells it to brands, and runs campaigns against measurable performance KPIs. As a result, the marketing team becomes one of many internal customers, alongside merchants and external brand advertisers. Retailers that treat the RMN as a marketing project instead of a media business operating inside the company never make the jump.
The KPIs Have to Change
The old KPIs around digital signage were play-time, screen uptime, and creative refresh rate. Those measure that the system is on. However, they do not measure value. By contrast, the KPIs that matter once the screen becomes inventory are different: sell-through rate of available impressions, average CPM by aisle, attribution-confirmed lift, repeat advertiser rate, and gross margin per screen. Therefore, retailers that fail to install the new measurement framework end up running a retail media network that loses to a vendor pitch deck.
The False Success Mode
The most common failure pattern in 2026 is celebrating the wrong milestone. For instance, the retailer signs three brand-advertiser partnerships in the first quarter. Leadership declares the network live. However, six months later, advertiser renewal rates are below 30 percent because the closed-loop attribution never worked, and the brand advertiser cannot defend the spend internally. Launching is not running. Selling is not retaining. Revenue is not margin.
The Hardware Decisions That Decide the Outcome
Three architectural decisions separate the retailers who will earn a meaningful slice of the 70 billion dollar retail media economy from those who will keep buying screens and never see ad revenue from them.
Screen Type and Density
Standard LCD signage is a commodity. By contrast, MicroLED, OLED, and high-brightness modular displays become defensible inventory. Specifically, the brightness, color accuracy, and physical placement of the screen affect dwell time, which affects measurable impressions, which affects what advertisers will pay. Density matters too. For example, a retailer with 6 screens per store is a brand showcase. A retailer with 30 screens per store is a media network.
Audience Measurement Layer
Cameras, computer vision, and proximity sensors are not optional. The screen has to know how many people saw it, how long they looked, and ideally what demographic segment they belonged to. Without that data, the inventory cannot be priced against digital benchmarks. Therefore, the retailers winning in 2026 invested in audience measurement before they invested in selling the inventory.
Connected Store Stack Integration
The retail media network only delivers premium pricing if the screen, the loyalty system, the electronic shelf labels, and the POS share a real-time data layer. This is the same operating-system shift behind connected store strategy more broadly. In fact, I described it in the context of the Walmart Mexico ESL rollout, where the labels became the data input layer for everything else. Retail media is the revenue side of the same architecture. As a result, retailers cannot have one without building toward the other.
What This Means for LatAm Retailers
The retail media economy in Latin America is two to three years behind the U.S. However, the gap is closing faster than most CFOs in the region expect. For example, Walmex, Falabella, Cencosud, FEMSA, and Coppel all have the store footprint and the loyalty data to build serious retail media networks. The structural barrier remains the in-store hardware layer.
I have walked stores in Mexico, Colombia, and Chile where the digital signage runs on platforms that do not report audience measurement, do not integrate with loyalty data, and were procured by store operations instead of by a media-business owner. As a result, those screens cannot become inventory without a hardware refresh and an organizational redesign. The retailers in the region that move on both in parallel will compound advantage. Meanwhile, the ones that wait for one before the other will lose ground every quarter.
For LatAm grocers, drugstore chains, and department stores, the strategic question is not “should we build a retail media network?” Rather, it is “is our screen footprint capable of producing measurable impressions, and if not, what is the 24-month plan to make it so?” Importantly, that question goes to the CFO and the CIO at the same time. It is not a marketing question.
Where to Start: The 18 to 24 Month Playbook
The sequencing playbook for retail leaders evaluating an in-store retail media program over the next 18 to 24 months is concrete.
First 30 Days: Audit the Screen Footprint
First, audit your existing screen footprint. Count the screens, document the platform, identify whether each screen can report audience and impressions data. As a result, the number of screens that pass that test is the size of the inventory you can sell today. The rest is the size of the upgrade investment you have to plan for.
Two Quarters Out: Decide the P&L Structure
Next, decide whether the retail media network sits inside marketing or stands up as its own P&L. The retailers winning in 2026 chose the second. Most importantly, stand up the ad operations function with measurement-side accountability before chasing brand-advertiser revenue.
The 18 Month Horizon: Rebuild for Measurable Inventory
Finally, rebuild the hardware footprint with measurable inventory in mind. That means cameras and proximity sensors on every screen. Furthermore, edge compute capacity to process audience data in real time. In addition, connected store integration so an impression on aisle 7 ties to a purchase at the register. The retailers who invested in this in 2024 and 2025 are the ones running 100 million dollar P&Ls today.
In summary, the retailers who treat retail media as an advertising opportunity will sell some impressions and lose advertiser renewal. By contrast, those who treat it as an inventory business will compound revenue every year for a decade.
Your competitor cannot copy your store footprint. The data layer that turns it into inventory is the only thing they cannot buy off the shelf.
If you are evaluating an in-store retail media strategy or a digital signage refresh for your store network, connect with me here or reach me on LinkedIn. I am happy to walk through the deployment framework we use across the U.S. and Latin America.
Adriana Rivas is a retail technology executive and AI strategist, and the founder of a U.S.-based hardware company specializing in self-service kiosks, POS systems, electronic shelf labels, and digital signage deployed across the United States and Latin America. She is the award-winning author of How to Implement Self-Service Without Failing (Amazon #1 Hot New Release, Silver Nonfiction Book Award 2025) and recipient of the Gold Stevie® Award — Thought Leader of the Year 2026. She is also recognized by Thinkers360 as a Top 10 Thought Leader – Retail and a Certified Expert – Retail.