What types of events (Events) exist in BPMN by trigger?

In BPMN, events (Events) are classified by trigger as follows:

• Start Events — initiate the process. They can be:

  • Message — the process starts upon receiving a message.
  • Timer — triggered by schedule or time.
  • Conditional — when a condition is met.
  • Signal — upon receiving a signal.
  • Multiple — multiple triggers.

• Intermediate Events — occur during the process and can be:

  • Catching — waiting for an event.
  • Throwing — generate an event.

• End Events — conclude the process, can emit events such as a message or signal.

Thus, trigger-based event types include message, timer, condition, signal, and multiple, which determine how and when the process reacts to external or internal events.