What does e-commerce primarily involve?

E-commerce primarily involves transacting goods or services over the internet, which encompasses a wide range of activities including online retail, electronic payments, and digital marketing. This definition reflects how businesses operate in a digital environment, allowing consumers to purchase products and services from the comfort of their own homes. The growth of e-commerce has transformed traditional business models by providing a platform where customers can access a global marketplace, making it flexible for businesses and convenient for consumers.

In contrast, the other options focus on traditional business practices that occur in physical locations, such as buying and selling in stores or conducting in-person marketing events. These methods do not capture the essence of e-commerce, which hinges on digital transactions and online interactions. The aspect of hiring employees is also not directly related to e-commerce, as it pertains more to human resource management than to the transaction of goods or services. Thus, the correct option clearly articulates the core nature of e-commerce as a digital transaction process.