Walmart Media Group, now Walmart Connect, has launched a demand-side platform that provides data for ad targeting as it seeks to become a top 10 ad company
The retail giant is launching advertising technology that lets brands use Walmart data to buy ads outside its digital platforms
Context & Ripple Effects
This DSP is the payoff of a multi-year build-out: Walmart bought Polymorph Labs in 2019 for ad-targeting tech (bought Polymorph Labs), then opened a self-serve platform for on-site search and sponsored product ads in early 2020. The rebrand to Walmart Connect plus an off-site DSP moves the company from selling ads on its own shelves to licensing its purchase data across the open web.
The stated goal — a top 10 ad company — is credible against the later trajectory in the coverage: US ad revenue grew 30% year over year to roughly $3.7B by mid-2024, and the Vizio and Vibe.co acquisitions extended the stack into TV screens and streaming.
First-order effects
- Brands gain a way to buy display and video ads off Walmart's properties using Walmart shopper data, putting Walmart Media Group in direct competition with established demand-side platforms on its suppliers' media budgets.
- CPG advertisers that already bought Walmart.com search placements can now extend those audiences beyond the retailer's site, concentrating more of their spend with one data owner.
Second-order effects
- Amazon and other retail-media operators face pressure to match off-site data targeting or risk losing brand budgets that want closed-loop measurement across both on-site and open-web inventory.
- Publishers and ad exchanges gain a new deep-pocketed buyer whose bids are backed by purchase data, tightening competition for premium commerce-adjacent impressions.
Third-order effects
- If the pattern holds, large retailers stop being media channels and become full-stack ad platforms — acquiring adtech (Polymorph, Aspectiva), screens (Vizio), and streaming tools (Vibe.co) — reshaping where CPG advertising dollars settle.
- Regulators and privacy rulemakers face a growing class of companies monetizing granular purchase histories for off-site targeting, raising the stakes on how first-party retail data may be shared with ad buyers.
The trend: Retailers are converting checkout data into programmatic advertising businesses, with Walmart's DSP marking the shift from on-site sponsored listings to off-site, data-driven media buying at scale.