How can marketers create preferred audiences for website remarketing without third-party cookies?

• A. Using a trusted server to store certain information for campaign bidding processes
• B. Randomly targeting users
• C. Collecting data via popups on every site
• D. Embedding third-party trackers

Answer: (A)

Creating preferred audiences for website remarketing without third-party cookies relies on first-party data that you control on your own server. The best approach is to store consented user signals and identifiers on a trusted server (for example, hashed email addresses, user IDs, and on-site event data) and then feed those signals into bidding systems or ad platforms. This lets you build audience segments deterministically based on your own data, without depending on third-party cookies or external trackers. By using server-side data and server-to-server integrations, you can target users who have shown specific behaviors (like cart activity or key page visits) while maintaining privacy, improving accuracy, and staying robust as browsers restrict third-party cookies.

Other options don’t fit because they either rely on intrusive popups and continuous data collection across sites, resort to random targeting, or depend on third-party trackers that browsers increasingly block.