Table of content
In Brief: The Results (Comparison 2023-2026 vs 2021-2023)
Cost per Lead (CPL): -51% (decreasing from CHF 68.- to CHF 33.-).
Conversion Volume: +302% (Qualified leads tripled).
The Challenge: An ultra-sensitive B2B audience with 48.5% tracking refusal.
1. The Paradox of the Fiduciary
For a fiduciary like G. Salerno & Associates, trust is the currency of exchange. Their clients are entrepreneurs and companies that demand total discretion.
Online, this translates into very specific behavior: The massive refusal to be tracked. The statistics from their tracking server (Stape) are unequivocal:
48.52% of visitors refuse statistical cookies (Opt-out) on the homepage.
19.72% use secure browsers (Safari, Firefox) that naturally limit tracking.
The Deadlock: With a classic setup (standard Google Analytics), the fiduciary was blind to more than half of its traffic. It was impossible to optimize Google Ads campaigns when 1 in 2 leads is invisible. The cost per acquisition (CPL) stagnated at CHF 68.-, a high amount even for B2B.
2. The Solution: Maximum Security & Modeling
To break this deadlock without compromising confidentiality ethics, A-Track deployed a strict "Privacy-First" architecture: Server-Side Tracking coupled with Google Consent Mode v2.
A. The "Security Gate" (Server-Side)
Instead of sending visitor data directly to Google, it passes through a secure Swiss server.
Anonymization: IP addresses are truncated before any sending.
Filtering: Sensitive data is removed. Google only receives the bare minimum for attribution.
B. AI Modeling (Consent Mode)
This is the key to performance for G. Salerno. Since 48% of people refuse tracking, we use Consent Mode in "Advanced" mode. Google receives anonymous signals (without cookies) from these users, allowing its AI to model lost conversions with over 90% accuracy.
Result: We do not track individuals against their will, but we measure the overall performance of campaigns.
3. The Numbers: Transformed Profitability
By comparing the recent period (with Server-Side) to the historical (classic Tracking), the impact of "Clean Data" on Google Ads algorithms is spectacular.
A Cost of Acquisition Halved
By feeding the algorithm with more reliable data (even modeled), it targets better.
Before: CHF 68.81 / lead.
After: CHF 33.72 / lead.
Gain: Every franc invested brings in twice as many qualified contacts.
Lead Volume x3 (+302%)
The most impressive aspect is not the cost reduction, but the explosion in volume.
The site conversion rate increased from 2.77% to 8.66%.
It is not the site that changed, but the measurement capability. Previously, these conversions existed but were not attributed to campaigns. Today, they are visible, allowing budgets to be scaled on keywords that truly deliver.
4. Technical Focus: Safari Recovery (ITP)
In the financial and entrepreneurial sector, the use of Apple (iPhone/Mac) is dominant. Server logs show that 19.72% of total traffic has been "saved" from tracking prevention mechanisms (ITP).
Specifically:
3,645 visits over 90 days would have had a cookie lifespan limited to 24 hours or 7 days.
With Server-Side, these cookies are secured (First-Party), allowing a quote request to be attributed to a visit made 3 weeks earlier.
Conclusion: Compliance is a Growth Lever
The case of G. Salerno & Associates proves one essential thing to B2B players: Confidentiality is not the enemy of marketing.
On the contrary. By adopting an infrastructure that scrupulously respects the user's choice (Managing the 48% refusal) while securing the technical data, the fiduciary has transformed its marketing cost center into an ultra-profitable growth engine.
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