Observed Signal · Oct 23, 2026 · Market Signal · Source: Index Exchange · Impact: 2/5
Intelligence, Meet Impression: What Sell-Side Decisioning Means for Programmatic Advertising
New blog post from Index Exchange discussing sell-side decisioning in programmatic advertising, published Oct 23, 2026.
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The AdTech Stack Is Consolidating: What Happens When Platforms Control More of the Advertising Journey?
New blog post published on Oct 27, 2026 discussing the consolidation of the AdTech stack and its implications for programmatic advertising.
Index Exchange CEO: Sell-Side Innovation, CTV Transparency, AI Agents
In an interview with ADZINE, Andrew Casale, CEO of Index Exchange, discusses the evolution of programmatic advertising. He argues that sell-side innovation, including modeling and containerization, is increasing complexity but also value. Buyers can now run their own models on the sell-side, democratizing decision-making. Casale addresses the black box concern, noting that while the internal logic of buyer models is opaque, the platform observes their actions. He highlights the shift towards modular infrastructure, with Index enabling data providers and DSPs to run modules on its cloud. Regarding CTV, Casale emphasizes the need for more transparency, noting that while genre data is increasingly available, show and episode data remain limited due to legal and distribution issues. He discusses the evolution of pod serving and the role of agentic advertising, distinguishing between workflow automation and impression-level decisioning, which remains the domain of mathematical models. Casale sees AI agents as useful for automating manual tasks but not as a revolution that will shift power from walled gardens.
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