O365 legal hold per OU or security group

[Jacob Airov]

Does anyone know of a way to put only certain groups of people on Legal Hold in Exchange Online O365?

We did have the whole company on legal hold, but now a certain division of the company doesn't want a blanket legal hold, so we need to roll it back to just users in United States.

So can I do legal hold maybe per OU or security group?

[#2]

Yes, you can use specific users as a target!
Please see official documentation:

https://docs.microsoft.com/sv-se/office365/securitycompliance/retention-policies?redirectSourcePath=...

Adam

[#3]

If you are referring to the good old Litigation hold in Exchange, this is configured on a per-mailbox basis, so yes, you can certainly configure it for specific users only. Since there are no OUs in O365, you will have to prepare a list of users via the on-premises tools, or you can just use a group membership criteria instead.