Walmart Connect has wired its shopper purchase data into Google's DV360, letting advertisers target Walmart shoppers on YouTube and measure actual sales. Closed-loop measurement is becoming the standard buyers expect.
Reaching the right audience was always half the job. Proving the ad caused the sale is the half that has been missing. This closes it.
Walmart Connect and Google's Display and Video 360 have struck a partnership that lets advertisers target Walmart shoppers on YouTube and then measure whether those ads drove actual purchases. Announced on 11 June, the integration pipes Walmart's real online and in-store purchase data into Google's buying platform. Brands can reach Walmart's 150 million weekly US customers through YouTube and close the loop on what the video spend earned.
The mechanics are the part to watch. Advertisers select Walmart Connect audience segments inside DV360, activate them on YouTube, then see whether the people who saw the ad bought the product at Walmart. It is rolling out now, starting with YouTube, with more inventory to follow.
Why it matters
Retail media has been the fastest-growing part of advertising because retailers sit on purchase data nobody else has. Plugging that data into Google's reach is the next step. It moves the conversation from did people see the ad to did people buy after seeing it. That is the measurement marketers have wanted for years.
The pattern matters more than the players. This is a US partnership, but the same retail-media-plus-purchase-data model is being built in Australia by Coles, Woolworths and others. Closed-loop measurement is becoming the standard buyers expect. If your reporting still stops at impressions and clicks, you are about to look dated.
The number of weekly Walmart customers advertisers can now reach on YouTube through the new DV360 integration, with purchases measured. Source: Google
What to do about it
Ask your retail media partners about closed-loop measurement. If they cannot tie ad exposure to actual sales, push them on when they will.
Stop accepting impressions as proof. A view is an input, not a result. The question is always whether the spend moved purchases.
Watch the Australian retail networks. Coles and Woolworths are building the same capability. Get familiar before your competitors do.
Get your own first-party data in order. The brands that benefit most from these integrations are the ones who can match their customers to the retailer's. That starts with clean data on your side.
Judge media on sales lift where you can. Where closed-loop measurement exists, use it. It is the closest thing to a straight answer you will get.
The gap between seeing an ad and buying the product is where most marketing budgets get wasted. Tools that finally measure across that gap are the ones worth your attention.