Standardizing Multi-Domain GA4 Tracking and E-commerce Reporting for a Risk Management Platform

01// The broken state

The client operated across multiple domains with an inconsistent GA4 and GTM setup that produced unreliable data. An audit surfaced double-counted page views, missing form conversion tracking, mismatched data streams and Measurement IDs, internal UTM parameters inflating sessions, duplicate events, and disabled cross-domain tracking. The e-commerce experience also lacked a data layer, so key shopping interactions went uncaptured.

02// What we changed

1. aPhase 1 - Audit: reviewed the existing GA4 and GTM configuration across domains, identified data accuracy issues, and recommended a standardized setup
2. bCorrected data stream configuration, resolved duplicate and double-counted events, filtered internal UTM traffic, and re-enabled cross-domain tracking
3. cBuilt a measurement plan to govern tracking of critical on-site actions
4. dPhase 2 - Implementation: deployed GTM tags for outbound clicks, CTA buttons, form interactions, video engagement, file downloads, and article views, then verified the data
5. eDelivered structured reporting per website section, covering traffic summaries, top and landing pages, hostname comparisons, geographic and device segments, search terms, and marketing attribution, with separate lead generation and resource performance views
6. fPhase 3 - E-commerce: used custom JavaScript to compensate for the missing data layer, capturing item-scoped data, item lists, and filter combinations via lookup table variables, and integrated this into dashboards

03// The outcome

Across a three-phase engagement, GA4Experts cleared the duplicate page views, inflated sessions, and double-counted events distorting the platform's data, then enabled cross-domain tracking and standardized tagging across its properties. New event tracking and a data-layer-free ecommerce setup were deployed, with consolidated per-subdomain reporting built on top.