Process Diagram is a visual representation of the workflow (steps, procedures and tasks) constituting a certain process, from startup and design through delivery and completion. It is a graph that serves as an analytical tool for designing and examining the process in detail to detect waste and identify areas of possible improvements. It’s also called "process map".
Process diagrams are widely used in business process management to visualize process-based sequences and design workflows. There is the term "process mapping" that links process diagrams to business process management. Mapping a business process means performing a structural analysis of the process’s work elements (activities or stages) to understand:
- How the work needs to be done
- What operations need to be carried out
- What practices and working conditions need to be met
Once all these questions are done, the process workflow is visualized through process diagram. Visualization includes process activities, their interconnections, information flows, and also performance measures. All this data is displayed as a collage on the diagram. This collage allows a business analyst to walk through the entire process, analyze the sequence of process activities, and detect any bottlenecks that block process progression and development.