Why server-side, and why now
For years a browser pixel was enough: drop the tag, watch conversions roll in. That era is over. Apple's iOS privacy changes, Safari's cookie limits, and the spread of ad blockers now strip out a large share of browser-based tracking — and the gap grows every year. Server-side tracking solves it by recording the conversion on infrastructure you control and sending it straight to the platforms through their APIs, where no browser setting can block it. Done right, with a server-side Tag Manager container and proper deduplication, it doesn't just recover lost data — it gives Google and Meta a cleaner, more complete signal than they ever had, which is exactly what their automated bidding needs to find your best customers.