Expand advertiser reach using publisher audiences across the open web
Stay connected to your audience, wherever they go.
Deliver ads to your audience wherever they go—not just on one site.
Reach high-intent users in more places, increasing engagement and ROI.
Publishers and advertisers build direct, trusted relationships based on shared data and goals.
Use first-party data to respect user consent and meet compliance standards.
Audience extension enables campaigns to scale beyond the publisher’s own properties.
Adapt easily to a cookieless future with identity-resilient audience targeting.
This site is the most comprehensive, independent resource dedicated to helping both publishers and advertisers understand and apply audience extension strategies. In a landscape shaped by the decline of third-party cookies, the rise of first-party data, and evolving ad tech standards, audience extension provides a smart, scalable path forward.
Whether you're a publisher exploring new revenue streams or an advertiser aiming for better targeting with trusted data partners, you'll find practical, trusted insights here.