E-commerce (EC) is an essential means for businesses to expand sales and acquire customers. However, operating an EC site involves many specialized terms—such as “SKU” and “Fulfillment”—that can be difficult for beginners to understand.

In this article, we will explain carefully selected EC terms that help you grasp the essence of e-commerce and can be immediately applied in practice. Each term is linked to challenges in logistics, marketing, and systems, with concise explanations of how they contribute to improving business efficiency and increasing sales.