Pioneering Server-Side Infrastructure: Farmatodo
The Challenge
As a major pharmacy chain, Farmatodo faced a significant data gap caused by aggressive ad-blockers and ITP (Intelligent Tracking Prevention) on mobile browsers. Traditional client-side tracking was losing roughly 20% of conversion signals, leading to undervalued marketing spend and incomplete user retention data for the C-suite.
The Tech Stack
Infrastructure
Google Cloud Platform (GCP), GTM Server-Side
Tracking & Marketing
GA4, Meta Pixel, Google Ads, AppsFlyer (Mobile), Braze (CRM)
Behavioral & BI
Hotjar, BigQuery, SQL, Looker
The Solution
Server-Side Implementation
Deployed a GTM Server-Side container on GCP to intercept web and mobile app requests. This transitioned third-party cookies to a first-party context, effectively bypassing ad-blockers and extending cookie longevity.
Omnichannel Integration
Streamlined the data flow to multiple vendors (Meta, Google Ads, Braze, and Hotjar) through a single server-side request, reducing the heavy JavaScript execution on the client-side and improving page load speeds.
C-Suite Retention Dashboards
Developed a custom ETL process to pipe raw event data from BigQuery into Looker. Authored the SQL logic to calculate rolling retention cohorts, giving leadership a real-time view of customer loyalty.
The "Aha!" Moment
After going live with Server-Side tagging, we realized that the "Marketing" budget was significantly more efficient than previously thought. We discovered that mobile app users who were "invisible" to our old tracking were actually our most frequent buyers, shifting the entire company's focus toward a "Mobile-First" loyalty strategy.
The Business Impact
+20%
Data Recovery — increased conversion signal tracking across Web and Mobile platforms
Lower CPA
Marketing Efficiency — improved attribution accuracy for Meta and Google Ads, lowering Cost Per Acquisition by identifying previously untracked conversions
1st Dashboard
Strategic Insight — provided the C-suite with the company's first real-time retention dashboard, directly influencing the 2021 marketing roadmap
Faster UX
Performance — improved website performance by offloading tracking scripts to the server, resulting in a snappier user experience