Decentriq powers OneLog’s OneDSP audience solution to provide Switzerland's leading publishers with privacy-safe advertising infrastructure

OneDSP powered by Adform is a new advertising platform developed by OneLog, the joint venture of AudieNZZ, CH Media, Ringier, and TX Group. OneDSP enables advertisers to buy premium digital advertising inventory across more than 50 renowned Swiss media titles, including 20 Minuten, Blick, NZZ, Tages-Anzeiger, and Watson.

The foundation for a unified publisher ecosystem

At the heart of the OneDSP audience solution is Decentriq’s privacy-enhancing technology. Decentriq co-developed the platform with OneLog, combining its data clean room technology with a new ID graph and the Decentriq Publisher Audience Platform DMP across publishers.

Advertisers and agencies can leverage these capabilities in different ways: using standard audiences through the DMP or bringing in their own data via Decentriq’s clean room and still maintain compliance under GDPR and Swiss data protection laws.

“Our technology enables this ecosystem of leading publishers to collaborate in new ways, offering advertisers privacy-safe precision at unmatched scale,” says Juan Baron, Head of International Accounts at Decentriq.

Built for expansion

OneDSP is operated by OneLog: “Our vision was to bring together Switzerland’s leading publishers to create a future-proof advertising platform,” explains Silvano Oeschger, CEO OneLog. “Decentriq’s secure data infrastructure was key to turning that vision into reality.”

“The capabilities we developed in this project are foundational,” added Baron. “These new technologies from Decentriq don’t stop with publishers: This is the beginning of an expanding product portfolio that will empower new types of partnerships across industries.”

Beyond OneDSP: Decentriq’s Publisher Audience Platform

With flexibility at its core, this infrastructure is already attracting interest from retailers and other sectors seeking to build their own compliant data ecosystems, showing that the technology extends beyond the initial publisher network.

To support this broader demand, Decentriq has developed the Publisher Audience Platform: a standalone solution that enables publishers, retailers, and other partners to unlock the full value of their first-party data. Built on Decentriq’s clean room technology, the platform combines audience segmentation, enrichment, identity resolution, activation, and measurement in a single privacy-first environment.

With these capabilities, organizations can enrich audiences with CRM or retail data, onboard advertiser first-party data, or generate predictive segments — all while staying fully compliant. The platform also unifies identity across cookies, logins, and universal IDs, and offers direct activation into DSPs, SSPs, and ad servers. Measurement features such as attribution and brand lift ensure that advertisers and publishers can close the loop, without ever compromising data control.

About OneLog
OneLog is the technology joint venture of Swiss publishing houses CH Media, NZZ, Ringier and TX Group and operates OneDSP, the new publisher-driven advertising platform enabling cookie-free, privacy-compliant targeting across the country’s most important media titles.