What does e-commerce refer to?

E-commerce refers specifically to the buying and selling of goods or services over the internet. This definition encompasses a wide variety of online transactions, including retail sales through online stores, service provision via web platforms, and even digital goods such as software and e-books. The core concept of e-commerce lies in the ability to facilitate these transactions electronically, allowing for convenience, accessibility, and a broader market reach for businesses and consumers alike.

In the context of the other options: while selling physical goods exclusively in stores, online banking, and marketing strategies are relevant to business practices, they do not encapsulate the broad definition of e-commerce. Selling only in stores limits the scope to traditional retail, online banking pertains to financial services rather than purchasing goods or services, and marketing strategies are overarching approaches to customer engagement rather than direct transactions. Thus, the essence of e-commerce is accurately captured by the buying and selling of goods or services over the internet.