The Triad of Tracking
A true performance marketing setup requires three pillars: Analytics (GA4), Tag Management (GTM), and Ad Network Pixels (Meta, Google, TikTok). They must all fire from the same Data Layer events.
Server-Side Tagging
Move your GTM container to the cloud. By processing tags on your server instead of the user's browser, you bypass ad blockers and Safari ITP restrictions, gaining 20-30% more data accuracy.