Buzz Digital tracks +21.7% e-commerce purchases

The overview

Focused on performance and data-driven marketing strategies, Buzz Digital wanted to implement precise Server-side Tracking to improve data reliability, increase conversion tracking, optimize campaigns, and boost ROAS. They had one clear KPI: to reduce data discrepancies between their clients’ e-commerce stores, analytics, and ad platforms to below 5% while improving attribution accuracy within 1 to 2 months.

In this case study, you will learn how Buzz Digital partnered with TAGGRS to meet their goal and deliver over 20% more measured conversions for a client's e-commerce.

The challenges

Platform-specific tracking setup

Before adopting TAGGRS, Buzz Digital relied exclusively on client-side tracking using Google Tag Manager and some direct integrations with Magento 2. But this setup became progressively less reliable, due to increasing browser restrictions and evolving privacy regulations.

Limited ad growth potential

On the client's side, campaigns repeatedly failed to reach the critical threshold of around 30 conversions/month, making it impossible to scale effectively and trigger key optimization phases within ad platforms. Despite running Google Ads that performed well, the full advertising potential was not yet realized.

The approach: going server side

Implementing Server-side Tracking with TAGGRS was quick and seamless, thanks to the Shopify App integration and the perfect match with the existing Buzz Digital’s dataLayer setup. Throughout the process, “the TAGGRS support team was very responsive and supported Buzz Digital with Facebook Conversion API event mapping, helping ensure everything was correctly configured,” said Sebastian Stahl, founder of the agency.

Today, Buzz Digital relies on a robust tracking setup that supports their omnichannel marketing strategies, including platforms like Shopify and – via Google Tag Manager – Meta Pixel & Conversion API, GA4, Google Ads Enhanced Conversions, Microsoft Ads, TikTok, and Cookiebot.

A man in a white hoodie looking at the camera, it's Sebastian Stahl from Buzz Digital

«With TAGGRS, tracking finally works the way it should: fast to implement, rock-solid data, and a direct impact on our customers' bottom line.»
- Sebastian Stahl, Buzz Digital

Results with TAGGRS Server-side Tracking

With their Server-side Tracking setup, Buzz Digital didn’t have to wait too much to see significant improvements. Between February and June 2024, they measured:

20% more purchase events compared to the previous period
Scalable Google Ads campaigns driving sustainable growth
+375% increase in purchases YoY
Over 180% growth in POAS, with a clear focus on actual profit rather than just revenue
Nearly 50% reduction in cost per purchase.

TAGGRS software showing the +21% uplifts in tracked purchases for Buzz Digital and Lilou

«With far more accurate data, we can make budget and optimization decisions with confidence. Campaigns are now optimized toward profit, not just revenue, and we can scale with much more precision.»
- Sebastian Stahl, Buzz Digital

Looking ahead

Buzz Digital started collaborating with TAGGRS in February 2024 and now runs Server-side Tracking for 13 clients on the TAGGRS platform. Adopting Server-side Tracking still represents for them a long-term competitive advantage. Especially because data-driven decision-making and privacy-compliant tracking will become even more important in the future.

«If you’re serious about scaling your campaigns and making truly data-driven decisions, don’t wait: switch to server-side tracking now. Server-side Tracking gives you the data accuracy you need to optimize campaigns effectively and stay ahead of the competition.»
- Sebastian Stahl, Buzz Digital

About Buzz Digital

Buzz Digital is an independent performance marketing agency founded by Sebastian Stahl in Neuss, Germany. They help small and medium-sized businesses increase their online visibility, generate more qualified traffic, and boost sales. The agency’s main focus is performance marketing, especially SEO, SEA, and data-driven marketing strategies.

Buzz Digital: +21.7% measured e-commerce purchases with Server-side Tracking