E-commerce involves the buying and selling of products or services over the Internet. It allows transactions to occur without barriers of distance or time. There are several types of e-commerce including business-to-business, business-to-consumer, and customer-to-customer. E-commerce provides benefits like lower costs, improved sales, and easy business management, but also poses risks such as security issues and lack of human contact. The Indian e-commerce industry is growing rapidly due to increasing internet usage and government initiatives to promote digital transactions. E-commerce is expected to significantly contribute to India's GDP and overall economy in the coming years.