A UML Sequence Diagram is a visual representation of the ordering and processing of events to achieve a particular goal. In the case of online shopping, it helps show how the customer navigates from choosing products to completing their purchase. The diagram also illustrates how systems interact with one another through messages, how automated systems handle tasks like payment verification, and any other steps in the process. This type of diagram provides important visual insights for designers and developers as they plan out projects. Use EdrawMax to create and download a similar UML sequence diagram for your online shopping system.