TelenorID vs. TelenorID+
TelenorID is first the brand used towards end-users for authentication in all Telenor countries. In addition to this TelenorID is a common technical authentication services used in all Telenor countries. The TelenorID technical service has only common autentication functionality needed in all countries. TelenorID+ is the extra add-on needed in Norway, providing identification of Norwegian Telenor users.
TelenorID+ and TelenorID
TelenorID is the main authentication provider used by TelenorID+ (but not the only one). TelenorID is a service provided by Telenor Digital.
TelenorID+ is only a name for a collection of technical microservices and not branded or visible for end-users, the brandname for authentication for end-users is always TelenorID.
Read more about TelenorID+ here.