A card network is an organisation that operates the infrastructure, standards, and rules that allow card payments to be processed between merchants, payment providers, acquirers, issuers, and cardholders. Card networks connect the participants in a card transaction and enable the secure exchange and authorisation of payment information. They define how transactions are routed, authenticated, cleared, and settled across the payment ecosystem.
The terms card network and card scheme are often used interchangeably. Common examples include Visa, Mastercard, American Express, and Discover.
When a customer makes a card payment, the transaction is sent through the card network to the cardholder's issuing bank for approval. The card network facilitates communication between the acquiring and issuing sides, helping to ensure that transaction data is exchanged in accordance with the card scheme's rules.
Once approved, the transaction moves through clearing and settlement processes before funds are transferred to the merchant.
Card networks are responsible for:
Although a card network provides the payment rails, it does not usually issue cards directly to consumers or acquire merchants itself. Those functions are typically performed by issuers, acquirers, and payment service providers.
Card networks, issuers, and acquirers all play different roles in card payment processing.
A card network (or card scheme) operates the rules, standards, and infrastructure that allow card payments to move between financial institutions. Examples include Visa and Mastercard.
An issuer is the bank or financial institution that provides payment cards to consumers or businesses. The issuer authorises transactions and manages the relationship with the cardholder.
An acquirer is the financial institution or payment provider that enables merchants to accept card payments. The acquirer receives transaction information from the merchant and communicates with the issuer through the card network.
A typical card transaction involves all three parties working together. The acquirer submits the payment request, the card network routes it, and the issuer decides whether to approve or decline the transaction.
Card networks form the foundation of the global card payments ecosystem. They provide the standards and connectivity that allow consumers to use payment cards across merchants, countries, and payment channels. For merchants and payment providers, card network rules can influence transaction processing, authentication requirements, interchange structures, chargeback procedures, and acceptance policies.
Most businesses rely on multiple payment methods, providers, and processing routes in addition to card payments. While card networks provide the underlying infrastructure for card transactions, payment companies often need broader visibility across their entire payment stack.
Payment orchestration helps businesses manage payment providers, routing, transaction flows, and reporting through a unified infrastructure layer. This allows teams to work with multiple providers and payment methods while maintaining visibility into payment operations across their ecosystem.
