An event bus receives events from event sources. This topic describes how to manage event buses in the EventBridge console.

EventBridge supports the following types of event buses:

  • System event bus: a built-in event bus that you do not need to create and cannot modify. This type of event bus is used to receive events of your Alibaba Cloud services. Events of Alibaba Cloud services can be published only to the system event bus.
  • Custom event bus: an event bus that you create and manage. This type of event bus is used to receive events of custom applications or existing message data. Events of custom applications or existing message data can be published only to a custom event bus.