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E-commerceMarketing technologyAttribution

GA4 Migration and Advanced Attribution

From Universal Analytics to event-driven measurement

Challenge

A mid-size e-commerce merchant still relied on Universal Analytics patterns that did not capture modern funnels or cross-domain checkout behavior, limiting attribution quality under GA4.

Solution

We re-architected the GA4 implementation around an event model aligned to commerce outcomes and downstream modeling.

Platform capabilities

Event-driven tracking

Modeled add-to-cart, checkout initiation, and repeat visit signals with consistent parameters.

Cross-domain measurement

Configured cross-domain linking across storefront and checkout hosts to preserve sessions.

Ads and warehouse linkage

Connected GA4 to Google Ads and BigQuery exports for attribution modeling and SQL-based analysis.

Anomaly monitoring

Python and Prophet models flag unusual conversion or traffic patterns for investigation.

Impact

  • More accurate channel and campaign attribution.
  • Quantified revenue leakage from cart abandonment surfaced for remediation.
  • Predictive signals for repeat purchase propensity enabled targeted retention plays.
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