Walmart Connect today tied its first-party omnichannel shopper data directly into Google's Display & Video 360, letting advertisers activate purchase-based audiences against YouTube inventory and trace those impressions back to confirmed retail sales - a combination previously unavailable within the DV360 workflow.

Walmart Connect announced today, June 11, 2026, a new partnership with Google that connects Walmart's shopper intelligence to campaigns running inside Display & Video 360 (DV360). The integration allows advertisers to select Walmart Connect audience segments from within DV360, activate them on YouTube, and then measure whether those video exposures generated actual purchases at Walmart. According to Walmart Connect, the integration begins specifically with YouTube, with additional inventory types planned to follow.

The announcement was described in a blog post authored by Ryan Mayward, GM & SVP at Walmart Connect, published on June 11, 2026. Mayward framed the move as a continuation of Walmart Connect's recent strategy to distribute its first-party data across the platforms that media buyers already use, rather than requiring advertisers to work exclusively through Walmart's own DSP.

What the integration does technically

At its core, the partnership joins three elements that have previously operated in separate environments: Walmart's first-party audience data, DV360's campaign execution layer, and YouTube's inventory.

Audience activation is the first component. Advertisers accessing DV360 will find Walmart Connect audience segments available as a targeting option within their existing workflow. According to Walmart Connect, those segments are built from actual purchase behavior spanning both physical stores and digital transactions - not modeled proxies or interest-based inferences. Walmart operates more than 4,500 stores and reaches approximately 280 million customers and members each week, giving the data set a breadth that narrower category- or channel-specific signals cannot replicate.

Closed-loop measurement is the second component, and arguably the more significant one for the marketing community. According to Walmart Connect, once a campaign runs, advertisers can measure how YouTube impressions influenced omnichannel sales at Walmart - meaning sales across both Walmart.com and physical store locations. The loop closes on confirmed Walmart purchase data, not a modeled correlation. The distinction matters in a measurement environment where many offsite campaigns still rely on probabilistic attribution. Here, the connection between the ad exposure and the retail outcome rests on Walmart's own transaction records.

Workflow continuity is the third element. According to Walmart Connect, advertisers access both the audience data and the measurement reporting directly within DV360, without switching between platforms or setting up separate data integrations. For agencies and brands that use DV360 as their central planning and activation surface, this means Walmart's retail intelligence enters their existing workflow rather than sitting in a parallel environment.

The YouTube context

The choice of YouTube as the initial inventory environment for this integration is not incidental. According to Courtney Rose, VP, Retail at Google, "With viewers watching an average of 110 million hours of shopping content on YouTube every day, the reach of the platform and potential for engagement is undeniable." That figure positions YouTube as a substantial commerce context, not merely an awareness channel.

DV360 has been Google's primary platform for enterprise programmatic buying, used by agencies and large advertisers to plan and optimize media investments across channels including CTV, display, and video. The platform has been systematically expanding its commerce media infrastructure over the past 18 months, adding audience classification categories and forging partnerships with retailers whose transaction data could underpin more precise targeting.

The Walmart Connect partnership follows a pattern visible in earlier DV360 retail data integrations. Kroger Precision Marketing joined DV360 through Google's Commerce Media Suite in March 2026, introducing SKU-level sales reporting that connected individual product purchases at Kroger directly to media spend. That deal was announced at Google NewFront 2026 on March 24, 2026, alongside Kroger as a Commerce Media Suite partner. Costco and Dollar General were added to the same suite at YouTube's annual Brandcast event in May 2026. Walmart becomes another major retailer in this expanding architecture - though the June 11 announcement does not explicitly describe Walmart Connect as joining the Commerce Media Suite by name.

What Publicis Media Exchange said

Joel Lunenfeld, Global CEO of Publicis Media Exchange (PMX), provided the agency perspective in the official Walmart Connect blog post. "We're excited about the continued progress in making high-quality retail audiences more accessible within the platforms our teams already use every day," Lunenfeld said. "As these audiences become more accessible across programmatic environments, more clients can activate and scale against them in ways that fit their existing workflows, especially given they are built on real purchase data rather than modeled signals. This not only improves efficiency and targeting, but also helps advertisers drive both brand outcomes and measurable business results from the same investment."

The PMX endorsement reflects a practical concern: large holding company media networks operate across dozens of buying platforms, and requiring teams to exit DV360 to access Walmart data creates friction. Embedding the data inside the platform removes that step.

Closed proof of concept, not broad availability

One detail in the Walmart Connect blog post is worth noting carefully. According to Walmart Connect, the full capability - combining audiences, YouTube activation, and closed-loop measurement - is currently in a closed proof of concept phase. Wider availability is expected later, though no specific timeline was given. This means the June 11 announcement is a commercial signal of direction and an initial architecture confirmation, not a product that all DV360 advertisers can access immediately.

That framing is consistent with how major retail media data integrations typically roll out. The Kroger DV360 integration, for example, was announced in March 2026 and positioned as a developing capability with SKU-level reporting listed as a differentiating feature still being expanded. The Yahoo DSP integration Walmart Connect announced on May 28, 2026 was similarly described as an initial step in a broader expansion plan.

Where this sits in Walmart Connect's distribution strategy

The DV360 partnership is the latest in a sequence of moves Walmart Connect has made in 2026 to distribute its first-party data across third-party platforms. The retail media network's advertising business reached $6.4 billion in fiscal year 2026, growing 46%, and Walmart Connect itself grew 41% in the fourth quarter of that fiscal year. That growth established a commercial base from which data distribution partnerships carry more weight - larger audiences, more transaction signals, and a larger pool of advertiser relationships that can activate through any given integration.

On May 28, 2026, Walmart Connect made its first-party audiences available inside Yahoo DSP for the first time, routed through Magnite's supply-side technology and covering VIZIO connected television inventory specifically. That announcement was framed as the first step in a broader expansion across the programmatic ecosystem. The Google DV360 integration announced today represents the second named external DSP partnership in a two-week period.

On April 28, 2026, Walmart Data Ventures launched the Scintilla Media Data Feed, an API-based product that gives agencies and technology partners structured access to Walmart's first-party operational and retail data elements - up to 500 data elements spanning omnichannel store performance and digital transaction data. That API operates at the planning and optimization layer, separate from the real-time audience activation that the DV360 and Yahoo DSP partnerships address.

On May 2, 2026, Walmart Connect launched Connect Select, a curated programmatic CTV marketplace within Walmart DSP, with Magnite, PubMatic, FreeWheel, and Index Exchange as supply-side partners and VIZIO, Paramount, and Warner Bros. Discovery providing inventory. That product opened programmatic CTV buying to all advertisers through Walmart's own DSP for the first time. The DV360 integration takes a different path: instead of requiring advertisers to buy through Walmart's own technology, it brings Walmart's data into Google's platform.

Together, these moves describe a structural shift in Walmart Connect's platform model. The previous approach kept Walmart's first-party data tightly bound to Walmart's own DSP. The 2026 expansion - through Scintilla, Connect Select, Yahoo DSP, and now DV360 - distributes that data across the programmatic stack while retaining Walmart's control over the audience definitions and the measurement methodology.

CTV expansion context

The Walmart Connect blog post notes that the DV360 integration expands how advertisers can apply Walmart Connect audiences across high-quality video environments, including CTV and Walmart's owned VIZIO inventory. Walmart completed the acquisition of VIZIO during fiscal year 2026, and the SmartCast platform it acquired gives Walmart automatic content recognition data from millions of connected television households. According to Walmart Connect, CTV campaigns run through its platform delivered a median of 44 percent new-to-brand buyers in fiscal year 2026, based on first-party data covering February 1, 2025 through January 31, 2026, across offsite CTV campaigns.

The addition of YouTube to the audience activation surface creates a third streaming environment alongside VIZIO and the Connect Select marketplace inventory from Paramount and Warner Bros. Discovery. Using consistent audience definitions and the same closed-loop measurement methodology across these different surfaces gives advertisers a way to maintain attribution continuity as a campaign moves from one streaming context to another.

Why this matters for the marketing community

DV360 is among the most widely used enterprise programmatic platforms globally. For agencies managing large video budgets, it functions as the operational center of media planning - where line items are structured, audiences are selected, and reporting is consolidated. Retail media data has historically required either using a retailer's own DSP or building custom integrations that add operational complexity. The Walmart Connect integration removes that barrier for buyers already inside DV360.

The retail media sector reached $52.44 billion in the United States during 2024, and the proportion of advertiser budgets allocated to first-party data environments has been rising as privacy regulations reduce the precision of traditional targeting. Brands working with four to six retail media networks doubled from 10% to 24% between 2024 and 2025. The DV360 integration gives any advertiser already using that platform access to Walmart's purchase-based segments without adding a new tool to their stack.

The upper-funnel measurement problem - connecting brand awareness campaigns to actual business outcomes - has been a persistent tension in programmatic advertising. Awareness and consideration campaigns are typically measured by reach and frequency, not by sales outcomes, because the gap between seeing an ad and making a purchase involves too many intervening variables for standard attribution models to handle reliably. Closed-loop measurement from a retailer with confirmed transaction data compresses that gap. Whether the ad reached a Walmart shopper, and whether that shopper subsequently bought the advertised product at Walmart, becomes a question with a verifiable answer rather than an estimate.

For the retail media community specifically, the Google DV360 partnership signals that Walmart Connect is positioning its first-party data as infrastructure across the programmatic ecosystem - not just a tool available to advertisers willing to operate inside Walmart's own platform. That positioning creates competitive pressure on other retail media networks, which must decide whether to build comparable external DSP integrations or differentiate on other dimensions.

Timeline

Summary

Who: Walmart Connect, the retail media division of Walmart Inc., in partnership with Google and its Display & Video 360 programmatic platform. The announcement was authored by Ryan Mayward, GM & SVP at Walmart Connect. Joel Lunenfeld, Global CEO of Publicis Media Exchange, and Courtney Rose, VP, Retail at Google, were quoted in the blog post.

What: A new integration that allows advertisers working inside Display & Video 360 to activate Walmart Connect's first-party shopper audiences on YouTube campaigns and measure how those video impressions influenced omnichannel sales at Walmart through closed-loop measurement. The capability is currently in a closed proof of concept phase, with broader availability planned for a later date. YouTube is the initial inventory type; additional inventory types are planned.

When: Announced June 11, 2026. The closed proof of concept phase is active as of the announcement date. No specific timeline for general availability was given.

Where: The integration operates within Google's Display & Video 360 platform, accessible to advertisers and agencies globally who use DV360 as their programmatic buying interface. Audience data originates from Walmart's U.S. omnichannel operations, spanning more than 4,500 physical stores and digital properties.

Why: Walmart Connect has been systematically moving its first-party data beyond its own DSP and into third-party platforms to reach the largest possible share of advertising budgets. The DV360 integration gives advertisers already using Google's platform access to purchase-based audience segments and closed-loop measurement without adding new tools. For the broader industry, it demonstrates that retail transaction data is becoming infrastructure across the programmatic ecosystem, not a feature exclusive to proprietary retail DSPs.