Credit Cards
Credit cards are a financial instrument that allows users to borrow funds from a card issuer to make purchases, with the obligation to repay the borrowed amount, often with interest. In technology contexts, they are commonly used for online payments, subscription services, and e-commerce transactions, requiring secure handling and integration with payment gateways. Developers often work with credit card data through APIs, encryption, and compliance standards like PCI DSS to ensure security and fraud prevention.
Developers should learn about credit cards to build secure payment systems in applications, such as e-commerce platforms, mobile apps, or subscription-based services, where handling sensitive financial data is critical. Understanding credit card processing helps in implementing features like tokenization, fraud detection, and compliance with regulations, which are essential for user trust and legal adherence in fintech and online businesses.