1. N "Information barriers and Exchange Online
IB policies aren't available to restrict communication and collaboration between groups and users in email messages. Only Exchange Online deployments are currently supported for IB policies. If your organization needs to define and control email communications, consider using Exchange mail flow rules."
2. Y
3. Y
Given answers are correct - YYY
Information barriers and SharePoint and OneDrive
In SharePoint and OneDrive, IB policies detect and prevent the following kinds of unauthorized collaboration:
Adding a member to a site
Accessing site or content by a user
Sharing site or content with another user
Searching a site
For more information, see Information barriers in SharePoint and Information barriers in OneDrive.
Information barriers and Exchange Online
IB policies aren't available to restrict communication and collaboration between groups and users in email messages. Only Exchange Online deployments are currently supported for IB policies.
Source: https://learn.microsoft.com/en-us/purview/information-barriers
NYY
Microsoft Exchange Online does not natively support Information Barriers for restricting communication between users. Information Barriers are typically a feature found in Microsoft Teams and SharePoint Online to prevent certain users or groups from communicating or collaborating with each other.
Should be NYY
YYY is correct
https://learn.microsoft.com/en-us/purview/information-barriers?view=o365-worldwide
IB policies aren't available to restrict communication and collaboration between groups and users in email messages. Only Exchange Online deployments are currently supported for IB policies. If your organization needs to define and control email communications, consider using Exchange mail flow rules.
I think, for Exchange Online, it's implemented via address book policies, where you separate users in separate address book. A bit over the top. When till users cannot speak verbally to each other depending on their grouping.... Purview should be renamed to Big Brother !!!
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