Sign in to the Microsoft Entra admin center as at least an Application Administrator.
If you have access to multiple tenants, use the Settings icon in the top menu and switch to your external tenant from the Directories menu.
Go to Identity > Applications> Enterprise applications.
Select New application, and then select Create your own application.
On the Create your own application pane, enter a name for your app.
Select Integrate any other application you don't find in the gallery (Non-gallery).
Select Create.
The app Overview page opens. In the left menu under Manage, select Properties. Switch the Assignment required? toggle to No so that users can use self-service sign-up, and then select Save.
In the left menu under Manage, select Single sign-on.
Under Select a single sign-on method, select SAML.
On the SAML-based Sign-on page, do one of the following:
