1. Cross-border Payment
The transfer of money from one country to another through any payment system.

2. Acquiring Bank (Acquirer)
A bank that processes credit card or debit card payments on behalf of the merchant, enabling them to accept card payments.

3. Issuing Bank ( Issuer)
The bank that issues credit cards or debit cards to consumers and has a direct relationship with the cardholder for account maintenance and transaction processing.

4. Application Service Provider (ASP)
 A company that offers software applications over the internet, often providing services like payment gateway integration, transaction processing, and risk management for merchants.

5. Card Scheme ( Card Network)
An organization that operates a global or regional payment card information exchange network, such as Visa, Mastercard, or American Express, which establishes and maintains standards for card transactions.
These terms are fundamental in understanding the cross-border payment ecosystem. If you need further details or have more questions, feel free to ask!