[UPDATE 21/10/2018] The Profiles & Audiences core service has been renamed as People core service. Everything else stays the same.
When the Adobe Marketing Cloud was rolled out, it included some new features, which were not part of any individual solutions. These features were called Core Services. One of these features was Customer Attributes, part of the Profiles & Audiences core service. If you do not have an AAM license, it can be very useful in a few use cases. Let’s see how to set Customer Attributes up.