The data marketing experts behind 200+ tracking plans.
Our story
Tag Expert was founded on a simple observation: most businesses collect data, but few can trust it. We started with a mission to bridge the gap between raw tracking data and real business intelligence.
What began as a specialized GA4 consultancy has grown into a full data marketing agency. From our first tracking audit for a Paris startup to enterprise implementations for international brands, our focus has never changed — delivering analytics setups that teams can actually rely on.
Today, we help over 100 companies across e-commerce, SaaS, and media turn their data into a competitive advantage. Our approach combines deep technical expertise with a genuine understanding of business goals, because the best tracking plan is one that drives decisions, not just dashboards.
Our team
Yoan Yahemdi
Founder
Ange Kouadio
Data Consultant
Samantha Buigne
Account Manager
Nicolas Salazar
Data Consultant
Values
Precision
Every data point matters. We deliver tracking implementations you can trust.
Transparency
Clear communication, honest assessments, and no black boxes.
Impact
We measure success by the business decisions our work enables.
Certifications
Google Analytics Certified
Google Partner
GTM Expert
Google Tag Manager
Matomo Certified
Matomo Analytics
Ready to unlock your data potential?
