Top Retail Media-Related Stories From December Costco, Ulta Beauty, Walmart and others shared retail media-related advancements, collaborations and other news and perspectives during the month. Best Buy Canada Expands Reach of Its Retail Media Network Partnership with Rokt lets Best Buy Ads Canada offer targeted offers from non-endemic brands. Best Buy Canada, Place Exchange Team Up to Boost In-Store Ad Space The partnership enables advertisers to programmatically access thousands of digital screens throughout Canadian stores.