Adyen Becomes Principal Member of CB and Direct Participant of STET, Strengthening its Integration in France

Adyen, the financial technology platform of choice for leading businesses, announces its appointment  as a Principal Member of the Groupement des Cartes Bancaires CB. Simultaneously, Adyen has become a direct participant in the European clearing system STET.

CB: France’s leading network

By joining the CB network, Adyen is integrating directly with France's leading domestic payment scheme, which handles 15 billion transactions annually. This Principal Member status provides Adyen with enhanced operational and financial control.

From the end of Q1 2026, Adyen’s servers will be directly connected to the CB network without intermediaries, ensuring total service continuity and optimized performance for its merchants.

Adyen: The first new direct participant in the STET network in two decades

By becoming a direct participant in STET, the European clearing system, Adyen will now manage all transaction processing in-house. This strategic integration highlights Adyen’s commitment to streamlining and controlling the entire payment value chain.

“Becoming a Principal Member of CB is a major milestone in our ongoing commitment to the French market,” said Pieter van der Does, Co-founder and Co-CEO of Adyen. “It gives us greater operational control and allows us to deliver a more seamless payment experience on France’s leading card network. At the same time, our participation in STET will further streamline clearing processes, supporting the reliability and quality our customers expect.”

"We are delighted to welcome Adyen as a Principal Member of CB, France's premier national card and mobile payment network" said Philippe Laulanie, CEO of CB. "Adyen has successfully scaled internationally by prioritizing strong local integrations. As a partner of choice, we look forward to working together to drive continuous innovation in the payment industry."

About Adyen

Adyen (AMS: ADYEN) is the financial technology platform of choice for leading companies. By providing end-to-end payments capabilities, data-driven insights, and financial products in a single global solution, Adyen helps businesses achieve their ambitions faster. With offices around the world, Adyen works with the likes of LVMH, Deezer, leboncoin, Etam, B&B Hotels, and Boulanger. The collaboration with CB, as described in this release, underlines Adyen’s continuous growth and the strengthening of its market position over the years.

About CB

Created in 1984 to implement a universal and interoperable card and mobile payment system, as well as a cash withdrawal system at ATMs in France, the Groupement des Cartes Bancaires CB is the governing body of the CB card and mobile payment system. CB is the leading payment network in France, accounting for more than 65% of household consumption paid for by card or mobile. In 2024, CB represented:

• 77 million cards in circulation

• 44,000 ATMs

• 2.5 million CB merchant contracts

• 14.5 billion transactions (including over 7 billion contactless and 2 billion in e-commerce), representing a volume of nearly 700 billion euros.

For more information, visit www.cartes-bancaires.com

About STET

STET is one of the leading payment clearing systems in Europe. Created in 2004, STET operates a world-class, multi-purpose clearing platform capable of processing all types of retail payment instruments, both domestic and pan-European (SEPA). As a key player in the financial ecosystem, STET ensures the security, transparency, and efficiency of high-volume payment exchanges. In 2024, STET processed more than 7 billion transactions, serving as a backbone for the French and European banking communities.

For more information: www.stet.eu