Stripe is a comprehensive, secure online payment processing platform that allows businesses to accept credit cards, digital wallets (like Apple Pay), and other payment methods online or in person. It acts as an intermediary, facilitating transactions across 135+ currencies and offering tools for subscriptions, billing, and fraud detection. When a customer makes a purchase, Stripe's payment gateway encrypts the payment data and sends it to the banking network for authorization. Once authorized, the funds are securely transferred to the merchant's bank account.