Cookieless / End of Third-Party Cookies

Cookieless (the end of third–party cookies) is a trend toward the gradual phase-out of support for third-party cookies in most web browsers, which until now have enabled the tracking and recognition of the same user across various, independent websites for the purpose of ad targeting. This change is forcing marketers to increasingly rely on first-party data and alternative, more trustworthy methods of measurement and targeting.