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I have about 30 users in O-365 however only about 5 are in our active directory. &nbsp;We want to do single sign on for all 30 users. &nbsp;From what I can tell, people usually have the users already in AD and need to sync those to 365. &nbsp;What is the process for the reverse? &nbsp; Also, can I simply create a new OU for these users and only sync those users? &nbsp;We currently do not have any onsite Exchange, Lync, etc services. &nbsp;Only AD.
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I have about 30 users in O-365 however only about 5 are in our active directory.  We want to do single sign on for all 30 users.  From what I can tell, people usually have the users already in AD and need to sync those to 365.  What is the process for the reverse?   Also, can I simply create a new OU for these users and only sync those users?  We currently do not have any onsite Exchange, Lync, etc services.  Only AD.

Sync Office 365 Users with Active Directory

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.