Azure AD Seamless SSO permit to enable SSO (Single Sign On) with Azure AD/Office 365 portal. When users try to connect to portal, their computer computer is be able to carry out Kerberos authentification to pass credential via the web browser. The password is not requested from the user.
Azure AD Connect cloud provisionning meet the needs for hybrid management. The following advantages are offered by this functionality.
The Pass-through Authentication This authentification allows you to use the same password for the on-premise and Cloud-based applications. However, it’s important to note that user authentication is done through the Active Directory on-premise and not through Azure Active Directory. It’s a good alternative to Azure AD Password Hash Synchronization. However, it makes it easier to apply a security policy to passwords.