Because it describes how a group of objects interacts, this Sequence Diagram Example is a type of interaction diagram. Generally, Software developers and business professionals use these diagrams to understand a new system's requirements or document an existing process. Event diagrams and event scenarios are other names for sequence diagrams. It is crucial to note that there are two kinds of sequence diagrams: UML and code-based. This UML diagramming software includes all the shapes and features required to model both.