The organization has predefined authentication methods that employees should prefer when using data systems.
When using cloud services, the user can often freely decide how he or she authenticates with the service. A single centralized authentication account (such as a Google or Microsoft 365 account) can help close a large number of access rights at once when the main user account that acts as the authentication method is closed.
The organization must use unique usernames in order to associate users and assign responsibility for them.
Shared usernames are not allowed and users are not allowed to access information systems until a unique username is provided.