Server-Side Tagging Explained: What It Is and Why Marketers Are Switching
Marketing teams rely on data to decide where budget goes. The problem is that a lot of that data no longer arrives. Understanding server-side tagging helps explain why, and what to do about it. The problem with browser tracking Most tracking still runs in the visitor's browser. The browser loads scripts from analytics and ad platforms, then those scripts send data back. Modern browsers now limit this. Apple's Intelligent Tracking Prevention and Chrome's privacy changes restrict third-party tracking, and ad blockers stop many scripts before they run. Some UK analytics studies report client-side data loss above 30%. When events go missing, reports look complete but tell only part of the story. Attribution shifts, campaigns look weaker or stronger than they are, and budget follows the wrong signals. What server-side tagging actually is Server-side tagging moves the work from the browser to a server you control. Your website sends events to that server first, usually a G...