Link Your Azure Domain
You can integrate your Azure domain with ClassLink - leverage your existing Azure groups, users can sign into ClassLink with their Microsoft accounts, and SSO into Microsoft resources.
Administrators may now link their Azure domain to the ClassLink Management Console – in seconds! Go to Domains under Settings in the Management Console. Click the gear icon to configure your domain settings then click the Azure Apps tab to bring you to the screen below. If you have more than one Azure domain, add a new domain to the Domains section of Settings.
Clicking the Enable button will prompt you to log in to your Azure administrator account:
Done: Azure Domain Linked!