Search notes:

Azure Active Directory

Azure Active Directory is sometimes abbreviated with Azure AD.

Among others(?), Azure Active Directory allows to authorize access rights to secured resources through Azure role-based access control (Azure RBAC).

See also

The Azure Services

Azure Active Directory Domain Services
Azure Active Directory B2C
Azure Directory External Identities

See also get-azResourceProvider

There is a N:1 relationship between Azure subscription and Azure Active Directory: a subscription trusts one Azure AD to authenticate users, services and devices. (But one Azure AD might authenticate multiple subscriptions).

Resource Providers for Azure Active Directory include

Microsoft.ADHybridHealthService
Microsoft.Compute

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