BPMN 2.0 is the leading standard for documenting and automating business processes because it combines a diagramming language that business users instantly understand with an XML backbone that workflow engines can execute. Its extended set of events, tasks, and gateways models everything from straightforward “happy‑path” scenarios to complex error handling and compensation, while dedicated choreography and conversation diagrams make cross‑team message flows crystal clear. The result is a single diagram that can move seamlessly from whiteboard to production, eliminating hand‑offs, speeding up change cycles, and giving organisations an auditable, always‑up‑to‑date blueprint of how their work actually happens.