About
American Express is a card network run by American Express Company that, unlike the bankcard networks, is also a card issuer and merchant acquirer on its own network, so it holds direct relationships with both cardholders and merchants and sees information at both ends of a transaction. In about 120 countries and territories it also licenses third-party banks to issue Amex-branded cards or acquire merchants, and it signs small merchants through third-party processors under its OptBlue programme. At the end of 2024 there were 146.4 million Amex cards in force, 83.6 million issued by Amex itself, and $1.55 trillion was billed on its own cards that year.
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