How This Startup Is Hacking B2B Ads on TikTok, Instagram, and Amazon

In this episode of the Marketing Scientists Podcast, Keith Putnam-Delaney, CEO of Primer, reveals how his company is reinventing B2B audience targeting across channels like TikTok, Instagram, and even Amazon. He unpacks the limitations of traditional ad targeting, the misconceptions around "dead" channels, and why marketers need to rethink attribution and incrementality. Keith also dives into the evolving role of AI in advertising, shares a spicy take on LinkedIn ads, and explains how creative and audience experimentation is still the ultimate unlock.

About the guest: Keith Putnam-Delaney is the co-founder and CEO of Primer, a fast-growing startup transforming how B2B marketers activate audiences across social and programmatic platforms. With a background in data and growth strategy, Keith brings a sharp and opinionated view on what’s broken in modern marketing—and what’s coming next. From holdout tests to AI-driven targeting, he's helping companies navigate the future of ad performance with clarity and precision.