The document discusses Business Process Modeling Notation (BPMN), which is a graphical representation used to model business processes in a workflow. It was developed by the Business Process Management Initiative (BPMI) and the Object Management Group (OMG) to provide a standard notation that is understandable by all business users. The document outlines the key elements of BPMN including flow objects, connecting objects, swimlanes, artifacts, and how it can be used to create business process diagrams.