Ad tech's AI-driven future: Agentic buying, streaming growth, and the trust gap ahead of Cannes Lions 2026
By
Luis Rijo
Summary
The article examines the advertising technology landscape heading into Cannes Lions 2026, highlighting a major shift toward automated, agent-driven decision-making in ad buying. Key themes include: the rise of agentic AI for programmatic advertising, the impact of AI search (like Google's AI Overviews) on publisher traffic and ad revenue, the growth of streaming TV and retail media networks, challenges in cross-platform measurement and verification, and emerging privacy regulations. WPP Media's midyear forecast projects 4.4% global ad growth to $1.3 trillion in 2026, driven by AI investment. The central tension is between the industry's rapid adoption of autonomous AI agents and the still-developing measurement, verification, and legal frameworks needed to make that automation trustworthy.
Source
Key quotes
· 3 pulledThe advertising industry is committing to automated, agent-driven decision-making at speed, while the measurement, verification and legal scaffolding that would make that automation trustworthy is still being assembled.
WPP Media's midyear forecast, published June 18, projected 4.4 percent global advertising growth to 1.3 trillion dollars in 2026, crediting AI investment with offsetting geopolitical headwinds.
The macro numbers set the stakes.
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