GIE CB Definition.

Cartes Bancaires economic interest grouping (GIE), created in 1984. It governs the CB scheme (operating rules, security, equipment approval, interbank interoperability) for about 100 members, both banks and payment institutions. It does not process transactions itself: authorizations flow between members, and clearing goes through STET. It is the historical architect of French interbank interoperability and a textbook case of a resilient domestic scheme.

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