E-commerce, short for electronic commerce, refers to the buying and selling of products or services over the internet. It involves the use of digital technologies, such as websites, online marketplaces, and mobile applications, to facilitate transactions between buyers and sellers.

E-commerce has revolutionized the way businesses operate, allowing them to reach a global audience and offer products and services 24/7. It has also made it easier for consumers to compare prices, read product reviews, and purchase items from the comfort of their homes.

There are several different types of e-commerce models, including business-to-consumer (B2C), business-to-business (B2B), consumer-to-consumer (C2C), and consumer-to-business (C2B). B2C e-commerce is the most common, and it involves businesses selling products directly to individual consumers. B2B e-commerce, on the other hand, involves businesses selling products or services to other businesses.

E-commerce transactions typically involve payment processing, order fulfillment, and shipping. Payment processing can be done through a variety of methods, including credit cards, digital wallets, and payment gateways. Order fulfillment and shipping can be done through third-party logistics providers, or businesses may handle these tasks in-house.

Overall, e-commerce has transformed the way we shop and do business, and it continues to evolve as technology advances and consumer behavior changes.