Unless you have been living in a cave, you should already have a data layer in your websites. OK, maybe that is too harsh; however, at least, you should have a plan to put one in place. Once you have a good data layer, the next step I recommend is that you deploy a message bus.
The Profiles & Audiences core service has two main components: Customer Attributes (the “profiles” part) and the Audience Library (the “audiences” part). Today I am going to focus on the latter, which is also called Real-Time Audiences. As its name implies, it allows you to create audiences, for which visitors qualify in real time.