International payment systems are networks that facilitate the transfer of money across borders. They enable individuals and businesses to send and receive payments in different currencies, ensuring that transactions are processed securely and efficiently. Common systems include SWIFT, PayPal, and Western Union, which connect banks and financial institutions worldwide. These systems help streamline global trade by allowing for quick and reliable payments. They often involve currency conversion and may charge fees for their services. By using international payment systems, users can conduct business with partners and customers in various countries, promoting economic growth and collaboration.