Restricting office 365 access to work devices

I am using Office 365 for a large number of people. If I roll it out these users will have the ability to access on any devices. I realise there is a costly in tune option but is there anything else I can do preferably free to allow them only to access on their work device? thanks.
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Sid_FAsked:
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FOXActive Directory/Exchange EngineerCommented:
You can use a MDM solution from o365

see attached .pdf
Controlling-Access-to-Office-365-and.pdf
Vasil Michev (MVP)Commented:
The only free solution is via AD FS claims rules, assuming you have on-premises AD, servers and so on. Apart from that, you can use Conditional Access (requires Azure AD P1 license), which is cheaper than Intune.

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FOXActive Directory/Exchange EngineerCommented:
More reference material regarding free mobile device management in o365

ref link:  https://www.softeng.es/en-us/blog/controlling-devices-with-which-users-access-office-365.html
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