First-party data in online advertising: part 1: How they work and why they improve the campaign performance
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Series
23/2/2026
Lenka Pittnerová
Analyst

The cookie apocalypse and the many other attempts at coming up with an original name for the end of third-party cookies in Google Chrome thankfully stopped haunting our LinkedIn feeds sometime in early 2024. What it did do, however, was spark an industry-wide conversation about working with first-party data . That is proving to be a key step toward better measurement and stronger campaign performance today.