Omnicom’s Analytics Chief: For AI, Guardrails will Set Business Outcomes Free

The data has never been more abundant. The problem is what to do with it. Three-quarters of U.S. buy-side leaders now believe traditional ad measurement approaches are underperforming, according to a February 2026 eMarketer report, a figure that suggests the dashboard era may have run its course. The answer, said Holly Yonosko, chief analytics officer at Omnicom Media Group, is not more data - it is smarter constraints on how AI uses the data already available. "We have access right now to the most data we've ever had access to," Yonosko said. [...]

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