This article describes how to privately share an interactive map with other Map Business Online users.
Related article: Share public interactive map
In Public map sharing you get the map link for a shared map that can be accessed by anybody knowing the link and password on the Internet in the Map viewer without having an account (credentials) with Map Business Online. Map viewer is a limited map app that allows viewing a shared map and performing very basic operations like searching and printing.
On another hand a map shared privately can be opened in fully functional Web App or Windows/macOS App and facilitates advanced collaboration such map editing by a team. To view or edit a privately shared map, one needs a subscription with Map Business Online.