Before we start our journey to the read side of our application, we would benefit from adding some more concerns to the domain itself. So far, we have been concentrating on the core domain of classified ads. The core domain is what we should focus on when we create a new system. In our scenario so far, we have already made some progress implementing the core domain, and the team is now discussing what would be an absolute must-have to add to the system before they start creating the prototypes.
You might remember that we have already partially addressed the concern of who owns the ad. We have the OwnerId property of the UserId type in the ClassifiedAd aggregate, but so far we haven't got the location where OwnerId comes from. Apparently, our system needs to have users that must register themselves before creating new ads. We need to know who they are...