Q: What is the purpose of this product page?
A: This product page is part of the Sagar Merugu Marketing Analytics Measurement Lab. It is not a real store — it is a live demonstration environment that shows how GA4 eCommerce tracking, Google Tag Manager event architecture, and server-side tagging are implemented on a real WooCommerce website.
Q: Which GA4 eCommerce events fire on this product page?
A: Five GA4 events fire: (1) view_item on page load, (2) add_to_cart on button click, (3) begin_checkout during checkout, (4) add_payment_info at payment, and (5) purchase on the confirmation page.
Q: How does Google Tag Manager implement the tracking on this page?
A: GTM manages all tracking. WooCommerce pushes data into the dataLayer, and GTM uses Custom Event triggers to fire GA4 Event tags with mapped product parameters.
Q: What is server-side tagging and how is it used here?
A: It moves tag execution from the browser to a private server. A server-side GTM container receives requests, processes them, and forwards clean data to GA4, bypassing ad blockers.
Q: How can I use this page to test my own GA4 knowledge?
A: Open GA4 DebugView or GTM Preview mode, then interact with this page to see real-time events, parameters, and dataLayer objects.
GA4 Events Tracked in This Lab
| GA4 Event | Trigger | Parameters Passed |
| view_item | Page Load | item_id, item_name, item_category, price, currency |
| add_to_cart | ‘Add to Cart’ click | item_id, item_name, quantity, price, currency |
| begin_checkout | Checkout click | value, currency, coupon, items array |
| add_payment_info | Payment step | payment_type, value, currency, items array |
| purchase | Order confirmation | transaction_id, value, tax, shipping, currency, items array |
How GTM Fires These Events
All events are implemented via Google Tag Manager. WooCommerce pushes product data into the GTM dataLayer on each user interaction. GTM listens for these dataLayer events using Custom Event triggers and fires the corresponding GA4 Event tag. The GA4 tag passes item-level parameters — including item_id, item_name, item_category, price, and currency — to the GA4 property. A server-side GTM container processes these tag requests server-to-server, bypassing browser-based ad blockers.