Tuesday, November 13, 2018

Office 365 integration with directory services

Office 365 can integrate with your existing directory services and with an on-premises installation of Exchange Server, Skype for Business Server 2015, or SharePoint Server 2013.

When integrate with directory services, we can synchronize and manage user accounts for both environments. We can also add password hash synchronization or single sign-on (SSO) so users can log on to both environments with their on-premises credentials. For more information about hybrid environments, see Office 365 hybrid cloud solutions overview.
Integrate Office 365 with directory services
If you have existing user accounts in an on-premises directory, you don't want to re-create all of those accounts in Office 365 and risk introducing differences or errors between the environments. Directory synchronization helps you mirror those accounts between your online and on-premises environments. With directory synchronization, your users don't have to remember new information for each environment, and you don't have to create or update accounts twice. You will need to prepare your on-premises directory for directory synchronization, you can do this manually or use the IdFix tool (IdFix tool only works with Active Directory).
Use directory synchronization to keep on-premises and online user account information synchronized

If you want users to be able to log on to Office 365 with their on-premises credentials, you can also configure SSO. With SSO, Office 365 is configured to trust the on-premises environment for user authentication.
With single sign-on, the same account is available in both the on-premises and online environments
Directory synchronization with or without password hash synchronization or pass-through authentication
A user logs on to their on-premises environment with their user account (domain\username). When they go to Office 365, they must log on again with their work or school account (user@domain.com). The user name is the same in both environments. When you add password hash sync or pass-through authentication, the user has the same password for both environments, but will have to provide those credentials again when logging on to Office 365. Directory synchronization with password hash sync is the most commonly used directory sync scenario.
To set up directory synchronization, use Azure Active Directory Connect. For instructions, read Set up directory synchronization for Office 365, and Use Azure AD Connect with express settings.
Directory synchronization with SSO
A user logs on to their on-premises environment with their user account. When they go to Office 365, they are either logged on automatically, or they log on using the same credentials they use for their on-premises environment (domain\username).
To set up SSO you also use Azure AD Connect. For instructions, read Use Azure AD Connect with custom settings.
Azure ADConnect
Azure AD Connect replaces older versions of identity integration tools such as DirSync and Azure AD Sync. For more information, see Integrating your on-premises identities with Azure Active Directory. If you want to update from Azure Active Directory Sync to Azure AD Connect, see the upgrade instructions. See a solution architecture built for Office 365 Directory Synchronization (DirSync) in Microsoft Azure.
 You can use the Azure AD advisors for customized setup guidance:

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