Are you a retail media fan? Here’s an upbeat DoubleVerify report that finds 61% of retail media buyers feel retail networks perform better than other channels. They’re not entirely thrilled, though: they cite high cost per thousand rates, limited targeting options, limited on-site ad space, and the lack of ad quality verification by third parties such as, well, DoubleVerify.

Retail media overlaps to some extent with Digital Out of Home (DOOH) advertising, depending on who owns the ad screen. Hivestack offers a full-stack programmatic DOOH platform, working with brands, agencies, media owners and others. They were just purchased by Perion Network, which provides ad tech across all digital channels, in a deal valued at over $100 million.

Media mix models (MMM), originally developed in the 1960’s, have undergone a resurgence as new technologies make them easier to execute and click-based attribution becomes less credible. But evaluating MMM brings its own challenges. Australia-based Mutinex offers a vendor-neutral Open Source MMM Validation Framework which is now available for free to North American marketers and agencies.