Overview

At a high level, the system is essentially an event bus - a pipeline that receives events. Rules associated with the event bus evaluate events as they arrive. Each rule checks whether an event matches the rule’s criteria. You associate a rule with a specific event bus, so the rule only applies to events received by that event bus. This follows a Publisher/Subscriber pattern wherein a publisher creates (publishes) an event in the system and any number of subscribers can listen to this event as it happens, according to the rules set up by the subscriber.

Envase Connect Integration Guide: