# Custom Event Triggers

The Event Trigger service manages the business events and trigger conditions that are defined on [Zuora Business Object Model](https://docs.zuora.com?resourceId=zuora-business-object-model) or custom objects. When a Zuora object changes, the trigger conditions defined on the object are evaluated, and if any condition qualifies, a business event will be triggered and turned into a notification.
**Note**: Event Triggers operations are only applicable to custom events.

 - [POST /events/event-triggers](https://developer.zuora.com/v1-api-reference/api/custom-event-triggers/post_eventtrigger.md): When you create an event trigger, you must specify the base object and define the trigger condition. ### Specify the base object Use `baseObject` field to specify which object to define a trigger on.
 - [GET /events/event-triggers](https://developer.zuora.com/v1-api-reference/api/custom-event-triggers/get_eventtriggers.md)
 - [GET /events/event-triggers/{id}](https://developer.zuora.com/v1-api-reference/api/custom-event-triggers/get_eventtrigger.md)
 - [PUT /events/event-triggers/{id}](https://developer.zuora.com/v1-api-reference/api/custom-event-triggers/put_eventtrigger.md)
 - [DELETE /events/event-triggers/{id}](https://developer.zuora.com/v1-api-reference/api/custom-event-triggers/delete_eventtrigger.md)