When a user joins or leaves an audience, the Loyalty Engine can be configured to report an AUDIENCE_JOINED or AUDIENCE_LEFT event to your event stream. These events allow you to create reactors that trigger based on changes in audience membership.
Example
Imagine you have an audience that includes all users who have made 5 purchases within a month. When a user meets this criteria and joins the audience, an AUDIENCE_JOINED event could trigger a reactor to award 100 points.
These event types will only appear in your event type list once you’ve created an audience in your loyalty tenant with the option to report join and leave events enabled.
Enabling audience joined & left events for an audience
Audience joined and left events are enabled on a per-audience basis. To activate this feature, simply enable it in the configuration settings for the specific audience.
Audience joined & left events can be found in the create and editaudience screens of the Loyalty Console