Google Tag Manager – SERWER (GTM – Server-side) is an advanced tag management method where data processing is moved from the user's browser to a dedicated cloud server (e.g., Google Cloud). Instead of sending information directly to multiple third-party providers, the browser sends a single data stream to your server, which then distributes it to the final destinations.

Key benefits:

• Improved performance: Reduces the load on the user's browser, enhancing page speed (LCP).
• Security and Privacy: Full control over what data is shared with third parties (e.g., IP masking).
• AdBlock resistance: Data sent within your own first-party domain is harder to block, increasing analytics accuracy by 10-30%.