Audience Extensions

The Independent Guide for Publishers and Advertisers

Expand advertiser reach using publisher audiences across the open web

Why Audience Extensions?

Stay connected to your audience, wherever they go.

Extended Reach

Deliver ads to your audience wherever they go—not just on one site.

Performance Gains

Reach high-intent users in more places, increasing engagement and ROI.

Stronger Partnerships

Publishers and advertisers build direct, trusted relationships based on shared data and goals.

Privacy-Forward Targeting

Use first-party data to respect user consent and meet compliance standards.

Scalable Campaigns

Audience extension enables campaigns to scale beyond the publisher’s own properties.

Future-Ready Strategy

Adapt easily to a cookieless future with identity-resilient audience targeting.

Learning Hub Explored

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.

Explore the Audience Extension Learning Hub