tracking transparency restored

tracking audit & consent mode v2 implementation for e-commerce

an e-commerce team restored reliable conversion signals after consent changes while keeping the setup compliant and maintainable.

%data recovery

%gdpr compliant

%cpa reduction

ga4gtmconsent mode v2cookiebotgoogle adsgdpr

the challenge

after cookie-banner and tagging changes, shop revenue and ad reporting no longer matched.

conversion data disappeared from marketing dashboards while the shop backend still showed orders, making budget and bidding decisions unreliable.

there was also a compliance risk: non-essential scripts were partially firing before consent.

i treated this as a system issue, not a single-tag fix: first, a full audit of tag architecture, consent signals, and event definitions.

the audit uncovered duplicate implementations (theme code plus GTM) and obsolete triggers without ownership.

i then rebuilt the GTM container structure, implemented consent mode v2 cleanly, standardized event naming, and introduced a QA checklist.

the final step was measurement documentation so future changes remain controlled and traceable.

within 48 hours after rollout, conversions were visible again across Google Ads and GA4.

the gap between shop and reporting data dropped significantly, allowing bidding to run on stable signals again.

the setup passed internal GDPR checks and is now maintainable through clear documentation and governance.