Season 7, Episode 22: Quantifying the advertising value of cookies (with Garrett Johnson and Shunto Kobayashi)

Season 7, Episode 22: Quantifying the advertising value of cookies (with Garrett Johnson and Shunto Kobayashi)

June 30, 2026 · 46 min · Season 7 · Episode 22

About this episode

The episode discusses the impact of Google's Privacy Sandbox on the digital advertising ecosystem and the challenges of moving away from third-party cookies.

On this week's episode of the podcast, I am joined by Garrett Johnson and Shunto Kobayashi , professors at Boston University who have co-authored a paper titled "Can privacy technologies replace cookies? Ad revenue in a field experiment. " The paper quantifies the impact of Google's Privacy Sandbox on publisher revenue, user experience, and market competition through a field experiment conducted in collaboration with Raptive , a digital advertising management platform. Our conversation highlights the specific challenges faced by the digital advertising ecosystem as it moves away from traditional identifiers and toward a new, more restrictive privacy regime. Among other things, we discuss: How the loss of third-party cookies specifically affects regional markets with stricter privacy regulations like the European Union If the adoption of privacy-enhancing technologies like the Privacy Sandbox could truly bridge the revenue gap created by the deprecation of cookies What role browser vendors should play in establishing technical guarantees that satisfy both regulators and advertising stakeholders Why the industry tends to respond to identity restrictions by developing more…

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