Decentriq and userwerk join forces to unlock privacy-first commerce data collaboration

Unlike traditional retail media channels, userwerk operates directly on the order confirmation pages of leading retailers — a highly exclusive placement where only real buyers are reached, without any advertising clutter. This gives brands access to one of the most effective and least saturated touchpoints in digital commerce. Through integrations with major retailers such as OTTO, MediaMarkt, Saturn, ParfumGroup, and Sanicare, userwerk delivers tens of millions of monthly impressions and consistently generates around 200,000 qualified new customers per month.

By offering tailored incentives at the exact moment a purchase is completed, userwerk significantly boosts conversion and enriches the overall shopping experience.

For Decentriq, userwerk stands out not only for its unique position in the checkout ecosystem but also for its openness to connect its first-party data with publisher data. As Sylwia Iwanejko-Sajewska, Country Manager Germany at Decentriq, explains: “userwerk’s approach to commerce is impressive, and their willingness to collaborate around the associated data is exactly what makes them such a strong fit for our network.”

New privacy-safe opportunities for brands and publishers

With userwerk joining the Decentriq network, brands and publishers can safely combine purchase-intent and transaction-level commerce data with their own datasets. This unlocks powerful new possibilities, including:

• Enhanced performance campaigns through accurate audience segmentation and lookalike modeling
• Privacy-preserving data collaboration powered by Decentriq’s confidential computing technology
• Retail media activation based on real checkout behavior, enabling better targeting and higher conversion
• Cross-channel measurement and modeling that connects commerce signals with publisher or advertiser audiences

According to Dr. Markus Kalb, CEO of userwerk:

“By working with Decentriq, we can combine our checkout-level insights with other first-party datasets in a fully privacy-safe way. This unlocks real value for the brands we support.”

About userwerk

userwerk GmbH is a leading checkout and retail media technology company based in Ulm, Germany. Founded in 2017 by Dr. Markus Kalb, userwerk has grown into a powerful network that connects brands and retailers directly at the point of conversion — the moment when customers are most receptive.

userwerk’s unique value lies in its exclusive placement on order confirmation pages of e-commerce shops. This enables brands to reach real buyers only, in a completely non-competitive, high-attention environment. The result: exceptionally strong conversion rates and one of the most impactful touchpoints available in digital commerce.