A payment network is a system that facilitates the transfer of money between individuals, businesses, and financial institutions. It connects various payment methods, such as credit cards, debit cards, and digital wallets, allowing users to make transactions securely and efficiently. Examples of payment networks include Visa, Mastercard, and PayPal. These networks operate by processing payment information and ensuring that funds are transferred from the payer's account to the payee's account. They also provide security measures to protect sensitive data during transactions, making it safer for users to conduct financial activities online and in-person.