Retail Media in 2026: Why Every Brand Needs a Marketplace Advertising Strategy

retail media

According to eMarketer, December 2025, US omnichannel retail media ad spending is set to rise 17.9% to $69.33 billion in 2026, making it one of the fastest-growing channels in digital advertising. If you’re still treating retail media as a side budget line, that growth curve is the problem: your competitors are buying up the exact shelf space where your shoppers make their final decision.

Retail media is advertising placed across retailer-owned digital properties, including marketplaces, ecommerce websites, apps, and shopper platforms like Amazon, Walmart, or Instacart. Instead of chasing attention on social feeds or search results pages, brands pay to appear right where someone is already shopping, sometimes seconds before they add an item to cart. 

This article covers what retail media actually is, why it’s become essential heading into 2026, and how to put together a retail media strategy that holds up against bigger competitors.

Want Better Results From Your Ads?

Our team helps you build smarter strategies that actually convert.

What Is Retail Media?

Retail media is the practice of buying ad placements directly on a retailer’s digital properties, connecting three parties at once: the retailer, who monetizes their traffic and shopper data, the brand, who gets in front of purchase-ready customers, and the shopper, who sees more relevant products along their path to checkout. It grew out of Amazon’s sponsored product listings and has since expanded into a full advertising category of its own.

Retail media marketing now spans several distinct environments, each suited to a different part of the shopping experience:

  • Marketplace search ads, appearing at the top of product search results on sites like Amazon or Walmart.
  • Sponsored product placements, blending paid listings directly into organic browsing and category pages.
  • Display ads on retailer websites, shown on homepages, category pages, or checkout flows.
  • Onsite and offsite advertising, where onsite ads run within the retailer’s own app or site, and offsite ads use retailer data to target shoppers on outside platforms.
  • Retail apps, delivering personalized offers based on loyalty history and app behavior.
  • Connected TV and video placements, increasingly used by retailers like Walmart and Amazon to extend retail media beyond the product page.

Why Is Retail Media Becoming Essential in 2026?

Retail media is becoming essential because it puts brands in front of shoppers closer to the actual purchase decision, using data no other channel has access to. Four forces are driving this shift at once: purchase-ready audiences, first-party data, better measurement, and rising marketplace competition.

Access to High-Intent Shoppers

Retail platforms carry purchase signals that traditional ad channels simply can’t replicate. A shopper searching “running shoes” inside a retailer’s app has already declared intent to buy, which is a very different signal than someone scrolling a social feed.

Retail media ads sit closer to the point of decision than traditional awareness channels like display or video, which typically operate several steps earlier in the funnel. That proximity to the actual transaction is the core reason retail media consistently outperforms broader awareness formats on conversion.

First-Party Data Advantage

Retailer-owned data has become more valuable precisely because it’s harder to get anywhere else. As third-party cookies and cross-app tracking keep getting restricted, the data retailers collect directly from real transactions is one of the few reliable signals left. Retail media strategy increasingly starts with what a retailer actually knows about its shoppers, including:

  • Purchase history, showing exactly what a customer has already bought.
  • Browsing behavior, revealing what shoppers are considering but haven’t purchased yet.
  • Category interest, identifying which product types a shopper engages with repeatedly.
  • Shopping patterns, such as basket size, repeat purchase frequency, and seasonal timing.

Brands trying to understand this shift more broadly can compare it against the difference between zero-party and first-party data, since retail media leans almost entirely on the observed, first-party side of that equation.

Better Measurement of Advertising Impact

Retail media connects ad spend directly to sales outcomes in a way most digital channels can’t match. According to Skai’s Q1 2025 Digital Marketing Quarterly Trends Report, retail media held a 6.1x average return on ad spend for a fifth consecutive quarter, a consistency few other channels can show. That measurability comes from tracking:

  • Attributed sales, tying specific transactions back to the ad that influenced them.
  • Conversion tracking, measured on the same platform where the purchase happens.
  • Customer acquisition, showing which campaigns brought in genuinely new buyers.
  • Repeat purchase behavior, revealing whether an acquired customer sticks around.

Growing Competition on Marketplaces

More brands are fighting for the same shelf space, which makes paid visibility less optional every quarter. As marketplaces get crowded, organic placement alone rarely gets a product in front of enough shoppers, and paid retail media placement becomes the tiebreaker between two similar products.

How Does Retail Media Differ From Traditional Digital Advertising?

Retail media differs from traditional digital advertising mainly in what it optimizes for: purchase behavior instead of reach. The table below breaks down the practical differences a marketer will notice day to day.

Traditional Digital AdvertisingRetail Media
Focuses on reach and engagementFocuses on shoppers closer to purchase
Uses broad audience signalsUses actual retail purchase data
Conversion tracking can be limitedDirect sales measurement
Often drives awarenessInfluences consideration and purchase


Neither one replaces the other. Most brands still need broad-reach channels to build awareness, but retail media is what closes the gap between someone knowing your product exists and actually buying it.

How Does Retail Media Marketing Work Across the Customer Journey?

Retail media marketing works by placing different ad formats at each stage of the shopping journey, matching the format to how ready a shopper is to buy. A single retail media strategy usually spans all four stages rather than picking just one.

Awareness Stage

At the top of the funnel, the goal is simply introducing products to relevant shoppers who haven’t searched for them yet. Brands typically lean on display ads, video placements, and sponsored brand campaigns to build initial recognition within the retailer’s environment.

Consideration Stage

Once a shopper starts comparing options, the goal shifts to influencing product selection. Category placements, comparison-focused ads, and product recommendation units help a brand stand out against similar listings on the same page.

Purchase Stage

At the point of decision, the goal is capturing high-intent shoppers before they check out. Sponsored product ads, search placements, and marketplace promotions dominate this stage because they appear exactly where the buying decision gets made.

Post-Purchase Stage

After the sale, the goal becomes increasing customer lifetime value rather than winning a single transaction. Repeat purchase campaigns, complementary product recommendations, and loyalty-focused advertising keep a brand visible the next time that shopper is ready to buy. 

Brands running these campaigns on mobile can pair them with mobile retargeting best practices to keep post-purchase engagement consistent across devices.

How Can Brands Build a Retail Media Strategy in 2026?

Building a retail media strategy starts with picking the right platforms and working outward from there, rather than spreading budget thin across every marketplace at once. Use this sequence as a starting framework:

  1. Identify where your customers already shop. Prioritize the one or two marketplaces where your category sees the most existing purchase volume before expanding further.
  2. Audit your first-party data readiness. Confirm your product feed, loyalty data, and CRM records are clean enough to feed into a retailer’s targeting tools.
  3. Map campaigns to each funnel stage. Assign a specific ad format and goal to awareness, consideration, purchase, and post-purchase, rather than running one generic campaign type everywhere.
  4. Set a realistic testing budget. Start with enough spend to gather statistically meaningful conversion data before scaling into additional retail media networks.
  5. Review attribution and incrementality regularly. Compare platform-reported ROAS against actual incremental lift so budget decisions aren’t based on inflated numbers.

Retail Media Is the New Baseline for Ecommerce

Retail media works because it combines purchase-ready audiences, first-party data, and measurable sales impact in one channel, something no traditional ad format offers at the same time. 

That combination is exactly why retail media has moved from a nice-to-have into a core part of how competitive brands plan their omnichannel strategy. Brands that build a retail media strategy early, rather than reacting once competitors have locked up the best placements, tend to hold a real advantage as marketplaces keep getting more crowded.

Ready to build a retail media strategy that fits your budget?

Book a free demo with ASTRAD to see how our platform connects targeting, first-party data, and reporting in one place.

FAQ

Related Blogs