Full Answer

Server-side tracking typically recovers 20-40% of conversions that client-side tracking misses due to ad blockers, iOS ATT, and browser cookie restrictions. The average uplift in tracked sales is 37%, though results vary by industry and traffic composition. Mobile-heavy audiences see the largest gains because iOS privacy restrictions block the most signals. ROAS improvements of 23-35% follow naturally as ad platforms receive more complete data, enabling their algorithms to optimize bids and audience targeting more effectively.