download the appSign up to get the inside scoop on today’s biggest stories in markets, tech, and business — delivered daily. Representatives for Walmart and Amazon did not respond to requests for comment from Business Insider. Walmart currently sells ad space to suppliers on its internal site and app and conducts ad campaigns through promoted posts on external social media sites. Advertisement"Walmart's consumer reach could propel Vizio's ad business to eventually rival Samsung and Roku. In Q4, which included the holiday shopping season for both companies, Walmart reported $173.4 billion in revenue, compared to Amazon's reported $169.96 billion.

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Persons: —, Forbes, David Zapletal, Kenneth Suh, AdWeek, Ross Benes, Doug Herrington, Fortune, Seth Dallaire Organizations: Service, Amazon, Business, Walmart, Hulu, Walmart Connect, Samsung, CTV, Insider Intelligence, Amazon's