E-commerce refers to business conducted over the Internet and World Wide Web. It involves the buying and selling of goods and services, as well as servicing customers and collaborating with business partners digitally. E-commerce lowers costs and product cycle times for businesses while allowing for faster customer response and improved service quality. It comes in various forms depending on whether transactions are business-to-business, business-to-consumer, etc. and whether aspects are purely digital or involve some physical elements.