From self-hosting to scalable Server-side Tracking

The overview

Social Brothers, a digital marketing agency based in Utrecht, Netherlands, wanted to have a reliable tracking stack that extended beyond client-side solutions to gain deeper control over data collection, get better attribution, and optimize their clients’ ad campaigns. They initially explored building their own Server-side Tracking infrastructure, but quickly faced challenges in maintaining uptime, managing complex technical configurations, and scaling the setup across multiple clients. Not even to mention the increasingly strict privacy regulations. In January 2024, Social Brothers adopted TAGGRS as a reliable Server-side Tracking platform. Leveraging TAGGRS’ ready-made templates and seamless onboarding, and pairing the solution with BigQuery, they quickly obtained the accurate tracking stack they needed. This shift delivered higher data reliability, sharper attribution insights, and stronger proof of marketing performance. Today, TAGGRS empowers Social Brothers to move beyond execution, positioning themselves as a true growth partner with measurable impact for their clients.

The challenge: client-side data is less reliable than you think

“With client-side solutions, one day you can measure 90% and the next day only 20%. You can’t send good data like that and you can’t train a machine either.”
- Teun van Kleef, Lead Advertising & Data @ Social Brothers

For a marketing agency, having trustworthy data is paramount for transparent reporting and effectively justifying and optimizing clients’ investments. However, not all tracking solutions are built the same: especially as the digital landscape shifts away from third-party cookies and privacy restrictions all over the place. This is the reality Social Brothers discovered when relying solely on Google Analytics 4.

Instability of client-side solutions

Client-side signals were unstable and fluctuated daily, undermining the reliability of machine learning models. This instability limited the Social Brothers’ ability to get the full data picture, build client trust, and lay a solid foundation for maximizing ROAS.

Overhead of self-hosting

Hosting their own servers meant taking full responsibility for uptime, technical setup, and ongoing maintenance, which created significant overhead. These challenges quickly proved more complex than anticipated and were not scalable across clients.

Ever-evolving privacy landscape

The constant evolution of privacy requirements (like Consent Mode v2 and Safari’s click ID restrictions) demanded continuous updates, making compliance difficult to maintain.

The solution: TAGGRS and BigQuery for reliable, scalable Server-side Tracking

“Once we joined TAGGRS, we could quickly set up a container, configure it properly, and process the subdomains in DNS. That went pretty smoothly.”
- Teun van Kleef, Lead Advertising & Data @ Social Brothers

Social Brothers partnered with TAGGRS to deploy a Server-side Tracking platform that integrates seamlessly with their key marketing channels and supports major platforms including Google Ads (with Enhanced Conversions), Meta CAPI, and GA4. By leveraging TAGGRS’ ready-made templates, in-product onboarding, and custom domain GTM setups for first-party tracking, they rapidly standardized implementation across their client base. “As TAGGRS added more onboarding steps over time, it worked really well — allowing even non-technical people to onboard,” shares Teun. To complete their tracking stack, they incorporated BigQuery for holistic analysis, particularly for e-commerce and lead generation clients.

The approach: leveraging combined data in a unified ecosystem

Social Brothers use TAGGRS to simplify setup with GTM container creation, DNS configuration, and template-driven event mapping, enabling efficient client onboarding with minimal technical complexity. Features like Consent Tool and tracking scripts resilient to ad blockers ensure compliance with evolving regulations such as Consent Mode v2 and browser restrictions, preserving data quality across EU markets.

Their core setup strategy is a 3-step framework:

Build a single source of truth with BigQuery
Collect return data and customer interactions through TAGGRS Server-side Tracking
Feed this enriched data back into ad platforms to optimize campaigns.

This unified data ecosystem acts as the “spider in the web,” empowering Social Brothers to prove campaign impact transparently and drive better performance.

The results: consistent data, improved attribution, and stronger client partnerships

measurable end conversions

session tracking accuracy

The stabilized server-side signals prevent the erratic fluctuations common with client-side tracking, allowing machine-learning driven Google Ads campaigns like Performance Max and Advantage+ to perform more effectively. Enhanced data reliability strengthens client trust by enabling clear attribution, transparent reporting, and justified budget scaling.

TAGGRS plays a key role in Social Brothers’ evolution from campaign executor to strategic growth partner. By stabilizing data quality and providing reliable attribution, Social Brothers can now:

prove ROI,
reduce risks of “unprovable” ad spends,
collaborate with clients on a deeper level.

This transparency shifts relationships away from pure execution toward long-term growth strategies.

About Social Brothers

Social Brothers is a digital marketing agency headquartered in Utrecht, Netherlands, with a focused Advertising & Data team of around 9+ specialists supported by in-house developers. They serve a diverse client base across B2B and B2C verticals, including lead generation and e-commerce, primarily in the Netherlands and other EU countries with varying privacy regulations. They combine expertise in platforms like Google Ads, Meta, Pinterest, and LinkedIn to deliver data-driven marketing solutions tailored to privacy-compliant tracking and scalable growth.