Depending on the variant of Eventarc that you are using, specific event providers and destinations are supported.
Eventarc Advanced
Events are delivered from an event provider or source to an Eventarc Advanced bus and through an Eventarc Advanced pipeline to a specified event destination. For more information, see Event providers and destinations.
Eventarc Standard
Supported events are routed from an event provider (the source) to an event destination (the target), also known as the event consumer or receiver. For more information, see Event providers and destinations.