How do you use UML and BPMN in your work?

UML (Unified Modeling Language) is used for visualizing the structure and behavior of a system: class diagrams help describe the architecture, sequence diagrams show interactions between objects, and state diagrams reflect the lifecycle of entities.

BPMN (Business Process Model and Notation) is applied for modeling business processes to visually represent the workflow, participant roles, and transition conditions. This helps align requirements with the business customer and identify bottlenecks in processes.

For example, when analyzing a new system, I first create a BPMN diagram of the main business process, then based on the requirements, I build UML diagrams for system design and communication between components.