External Payment Gateways
External payment gateways are third-party services that securely process online payments, handling transactions between customers and merchants. They manage payment authorization, fraud detection, and fund transfers, integrating with e-commerce platforms and websites via APIs or plugins. Examples include Stripe, PayPal, and Square, which support various payment methods like credit cards and digital wallets.
Developers should learn external payment gateways to build secure, compliant e-commerce applications without handling sensitive payment data directly, reducing liability and development complexity. They are essential for online stores, subscription services, and mobile apps requiring payment processing, as they provide ready-made solutions for PCI DSS compliance and global payment support. Use cases include integrating checkout flows, managing recurring billing, and handling international transactions.