Each incoming event is analyzed and external IDs are extracted (
We first search the Identity Graph for incoming external IDs.
If we find no users, we’ll create one.
If one user is returned, then that user is chosen.
If multiple users are returned, our merge protection kicks in and checks the validity of all of the provided external IDs.
If the merge protection checks pass, we’ll create a new merge connection between those two users. The first user profile ever created becomes the parent profile, and all merged users become child profiles.
If the merge protection checks fail, we’ll discard the lowest precedence external ID and re-run the algorithm.