
Tenants using Active Directory Federation Services (ADFS) will be able to use Smart Lockout natively in ADFS in Windows Server 2016 starting in March 2018-look for this ability to come via Windows Update. Note: RBAC is a generic concept, supported by Azure AD. An Azure AD tenant allows by default 50k objects.

In this blog, I will use Active Directory Federation Services (AD FS) as an example. From there, using advanced Azure AD Connect configuration, you can sync your users to one tenant and the users from the other company to their own tenant, as described here.

It is more and more used by customers in order to connect their on-premises Active Directory with online services such as Office365, SharePoint, Teams, etc.
