E-commerce (electronic commerce) is the buying and selling of products or services through the internet. It allows businesses and individuals to create online stores, display products, accept digital payments, and deliver goods or services to customers worldwide.

E-commerce includes various business models such as B2C (Business to Consumer), B2B (Business to Business), C2C (Consumer to Consumer), and dropshipping. It uses platforms like Shopify, WooCommerce, Magento, and online marketplaces such as Amazon and eBay.

Key features of e-commerce include online catalogs, secure payment systems, digital marketing, order management, and customer support. It offers advantages such as 24/7 availability, global reach, lower operating costs, and personalized shopping experiences.