This is because UML was not originally created to model business processes, it was purely a software development tool until it became apparent that a small set of diagrams, one in particular, can ...

These diagrams are useful for understanding the complex behaviors of your business processes, which can be used to ensure that your processes are designed to handle various scenarios effectively.

A business process now spans multiple participants and coordination can be complex. Until BPMN, there has not been a standard modelling technique developed that addresses these issues.

You’ll use a variety of modelling techniques, including: Business Process Model and Notation (BPMN), use cases, use case diagrams, and activity diagrams from the Unified Modeling Language (UML) to ...