Multitenant, Multi-App Consent with Azure AD (Entra ID)
Multitenant applications in what is now called Entra ID, but what I am sure I will continue to call Azure AD (AAD) for some time, are a way for developers to create Azure AD-backed applications that are managed in the developer tenant but allow users to log in and manage users from their tenant. They are a very common way for SaaS developers to manage application authentication whilst leaving the user management to the client.