Allowed domains
Here you define which domains are allowed to send requests to rek.ai services. This is also where you add an additional domain if you want to use cross-site recommendations between two sites.
To enable cross-site recommendations, you need to add the other site’s domain in your projects Dashboard. For example, if site A wants to display recommendations from site B, then site A must add site B’s domain here- and site B must add site A’s domain in its Dashboard.
You can read more about cross-site recommendations here.