The AI Advantage Isn't AI. It's Judgment.

What marketing and technology leaders need to know from Cannes Lions Festival of Creativity 2026, and exactly what to do about it.

Every leader at Cannes this year had access to the same AI. The organizations pulling ahead weren't the ones with better tools, they were the ones with better judgment: about where AI belongs, how it gets measured, and who owns the decision.

This field report breaks down the five signals that mattered most this year, what each one means for your organization, and the specific actions to take next.

What's inside:

• Why creativity remains a skill AI can't replace, and how leading organizations are structuring their teams around that
• The shift from creative measurement as an afterthought to a day-one requirement, including the market-mix-ROI approach forward-looking brands are already adopting
• Why prompt engineering became table stakes almost overnight, and where high-performing teams are actually pointing AI instead
• How the AI advantage has moved into the org chart, and what that means for how marketing and technology need to work together starting now
• Why growth increasingly depends on customer trust as AI mediates more of the discovery journey, and how to design for it

Drawn from first-hand sessions at Cannes Lions Festival of Creativity 2026, including panel discussions and remarks featuring Spotify, Walmart, Marriott, and more.