Adtech's Server-Side Workaround to Apple's Safari Tracking Crackdown Faces Hurdles, Privacy Experts Warn

Apple's Safari browser has been tightening its grip on cross-site tracking, prompting adtech firms to shift identity resolution to server-side methods. This move is designed to bypass Safari's Intelligent Tracking Prevention, which limits cookies and other client-side identifiers. Major players in the digital advertising ecosystem are investing in server-to-server integrations to maintain user tracking and ad targeting. However, privacy experts caution that these workarounds may be short-lived. Apple has a history of updating its privacy features to close loopholes, and server-side tracking could be the next target. The ongoing cat-and-mouse game between adtech and browser privacy features underscores the high stakes: digital advertising relies on tracking for revenue, while users and regulators push for stronger privacy protections. If Apple blocks server-side tracking, adtech companies could face significant disruption, forcing yet another reinvention of identity resolution. The industry's future hinges on whether it can find sustainable, privacy-compliant methods—or if it will continue to chase temporary fixes.