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Chief Strategy Officer at Colle McVoy, the Minneapolis-based independent creative agency known for its work with brands in agriculture, outdoor, and consumer sectors.

Chief Customer Officer at Coupa; former Microsoft executive in advertising and EU government affairs.

John Furner is the President and Chief Executive Officer of Walmart Inc.

John Gibson is a creative leader at Terri & Sandy, the independent New York advertising agency known for its female-founded perspective and culturally resonant campaigns.

John Gruber is the creator of Daring Fireball and inventor of Markdown, a leading Apple-focused tech commentator whose writing on privacy and platform policy has shaped AdTech discourse around Apple's ATT and tracking restrictions.

John Halley was President of Paramount Advertising, leading ad sales for Paramount and its predecessor companies over an 18-year run. He left the company in March 2026 after a transition period.

John Kahan is the Chief AI Officer of Stagwell Global.

Chief Transformation Officer and Managing Director at Digitas North America, leading strategic and operational transformation for one of the largest digital marketing agencies in the US.

AdTech operator driving programmatic innovation at RAD Amplify, focused on performance-driven advertising solutions and audience amplification strategies.

John Koenigsberg is the EVP and Head of Platform Partnerships at Horizon Media.

John Kozack leads U.S. advertising sales and marketing for TelevisaUnivision, the largest Spanish-language media company in the world, driving revenue across its expansive portfolio of TV, streaming, and digital properties.

Chief Marketing Officer of Cava since October 12, 2026; previously Chief Brand Officer at Dr. Squatch through its sale to Unilever.

John Melloy is a senior digital media executive at CNBC, known for leading the network's digital and streaming strategy at the intersection of financial journalism and modern media distribution.

Google's Search Relations lead and one of the most recognized voices in SEO and web standards, John Mueller bridges the gap between Google's algorithms and the broader digital publishing ecosystem.

John Nardone is the Chief Executive Officer of JWP Connatix.

John Oronte is a marketing and business development leader at AtData, a company specializing in email intelligence and data solutions for marketers.

Managing Director of WPP Production in New York, leading the global content production arm of the world's largest advertising holding company.

John Roa is the Chief AI Officer of Raptive.

John Rogers is the Senior Vice President of Global Publisher Development at OpenX.

John Schlifske is currently between roles.

John Solomon is a veteran AdTech executive known for his leadership roles at major digital media and advertising technology companies, with deep expertise in programmatic advertising and publisher monetization.

CEO of Apple since September 1, 2026, succeeding Tim Cook.

19th-century retail pioneer whose famous lament — 'Half the money I spend on advertising is wasted; the trouble is I don't know which half' — became the founding paradox of advertising measurement and the intellectual origin story of modern AdTech.