What is the primary benefit of audience extension for publishers?

The primary benefit of audience extension for publishers lies in the ability to convert traffic into advertiser audiences. This process allows publishers to leverage their existing audience data to reach a broader or more targeted audience across different platforms. By utilizing audience extension strategies, publishers can effectively monetize their audience by facilitating advertisers in targeting specific segments of users who have shown interest in their content or offerings.

This method enhances the overall value of the publisher's inventory, as it allows ad campaigns to be more efficient and effective, providing advertisers with access to high-quality, engaged users. As a result, publishers can increase their revenue potential through more profitable ad placements, as they connect advertisers with the right audience in a meaningful way.

Other answer choices do not align with the core advantage of audience extension. For instance, increasing site load speed and enhancing website design pertain more to user experience and site performance rather than audience targeting. Reducing advertisement costs is an outcome of different operational strategies rather than a direct benefit of extending an audience. Thus, the focus on converting traffic into advertiser audiences is what makes audience extension particularly valuable for publishers.