Most European domestic card schemes historically ran their contactless transactions over kernels specified and licensed by the international networks — a structural dependency in the most political layer of payments. CPACE (Common Payment Application Contactless Extensions) is the European answer: a kernel specification family developed under the ECPC by the domestic schemes themselves, covering the card and mobile application side as well as terminal kernels, EMV-interoperable but European-governed.
For product vendors, CPACE is a certification object like any payment application: the implementation lands on certified secure hardware (the CC/EUCC smartcard tradition), passes functional and security approval for the CPACE ecosystem, and coexists in the same chip or wallet with EMVCo-approved applications. The engineering reality is multi-tenancy — one secure element carrying international and domestic payment applications, each with its own approval chain, all resting on one hardware certificate.
Strategically, CPACE belongs to the same current as EPI, instant payments and the digital euro: European payment infrastructure reclaiming control of its critical components. Vendors who read that current early are building CPACE support into card, wallet and terminal roadmaps now — because domestic schemes’ migration decisions translate directly into issuance and acceptance requirements.