Various authentication options

Microsoft Teams is built on Microsoft 365 and leverages the authentication provided by the Microsoft 365 tenant, which could be Cloud Identity, Synchronized Identity, or Federated Identity, based on how the Microsoft 365 tenant is configured.

All three authentication models listed below authenticate Microsoft Teams, as Microsoft Teams supports SSO. This avoids the user being asked to log in multiple times. However, the crux of this chapter is the supporting mechanism of the Teams tab app created by developers to support authentication with SSO.

Here are the various authentication options:

• Cloud Identity: This is suitable for organizations with no on-premises Active Directory. Here, user identities are maintained with Azure Active Directory, so users are authenticated by Azure AD. You create user accounts in the Microsoft 365 admin center.
• Synchronization Identity: With this authentication, users use the same username and password as...