Tag Manager Server Demo - Client vs Server-side Tracking:
Google Analytics + Google Tag Manager vs. Tag Manager Server

Chrome without Tracking Protection
Result: Tracking works quite normally

Firefox with AdBlocker
Result: GTM is running, but Analytics tracking is blocked

Brave Browser
Result: GTM and Analytics tracking is blocked
Page Examples
Open different Browser and check this Analytics tracking methods with different browser settings like ITP or ETP and activate common blockers like AdBlock or Ghostery.
Homepage Content Page Contact & Conversion EEC Product Detail + AddToCart EEC Checkout SuccessDataLayer Data for active Page Example
window.dataLayer = window.dataLayer || []; window.dataLayer.push({ "pageType": "checkout.success", "visitorType": "external", "ecommerce": { "purchase": { "actionField": { "id": 1611258432, "revenue": "99.99", "tax": "19.00", "shipping": "4.99", "coupon": "DOWNLOAD_123" }, "products": [ { "id": "Tag Manager Server", "price": "99.99", "brand": "HOKATA", "category": "server-based tracking", "variant": "v0.3" } ] } } });