An event models something that happens during the lifetime of a process. In a diagram, an event is always visualized as a circle.
There are several types of events defined by BPMN 2.0, of which two always exist in a definition:
| Event | Description |
|---|---|
| startEvent | Indicates where a process starts. A start event is triggered by the arrival of a message or similar trigger such as the expiration of a timer. |
| endEvent | Models the end process or subprocess. When process execution arrives in an end event, a result is thrown. |
Events are described in detail in the Activiti user guide.