If you intend to make (parts of) your WordPress website available to customers, partners or basically to any other user from another Microsoft Office 365 Azure AD tenant, you can configure the professional and premium versions of the WordPress + Office 365 Login plugin to do so. In combination with the Domain whitelist you have a powerful tool in your hands to control which users eventually are granted access and / or can register.
To allow users from other tenants to access your WordPress website, you need to update the application’s registration in Azure AD first. By default, web app / API registrations in Azure AD are for a unique tenant. However, you can make your registration multi-tenant by finding the Multi-Tenanted switch on the Properties pane of your application registration in the Azure portal and setting it to Yes.
Then Launch the WordPress + Office 365 wizard by navigating to WordPress Admin, go to the plugins page and click Configuration. Select the User registration tab and check the box labelled Allow users from other tenants.
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