Cookie Tracking

Cookie tracking refers to tracking user behaviour with the help of small data files that the browser stores on behalf of websites. First party cookies originate from the visited domain and are usually unproblematic. Third party cookies are set by embedded third parties and enable cross domain observation, making them the central building block of classic advertising profiling.

Where cookie tracking is used

Classic use cases are web analytics, retargeting, frequency capping in ad campaigns, A/B tests and personalisation. Basket persistence and login state are also implemented through cookies. With the GDPR and the ePrivacy regulation, explicit user consent before setting non essential cookies is mandatory, which has made consent banners standard on European websites.

Why cookie tracking is under pressure

Browsers such as Safari and Firefox already widely block third party cookies, Chrome is following in steps. Strict privacy rules and privacy tools on devices reduce effectiveness further. Advertisers therefore shift tracking towards server side solutions, first party data strategies and contextual targeting that needs no personal profiles.

Practice note

A robust tracking setup today combines several sources, from server side event tracking through first party cookies to contextual signals. Correct consent management matters, because unlawful tracking can trigger expensive fines. Anyone who builds on first party data, for example through newsletter sign ups or customer accounts, becomes less dependent on browser restrictions and also gains more reliable insights.