I would like to know how many information barriers are required to prevent two teams from communicating with each other.
I am referring to two articles in the docs which, to my understanding, seem to contradict each other:
When you want to block segments from communicating with each other, you define two policies: one for each direction. Each policy blocks communication one way only.
and:
Information barriers only supports two way restrictions. One way restrictions, such as marketing can communicate with day traders, but day traders cannot communicate with marketing is not supported.
https://learn.microsoft.com/en-us/microsoft-365/compliance/information-barriers
So I guess I am asking:
Are information barrier policies:
A) one way (so you would need 2 policies to block communication between 2 Teams)?
B) two way (so you would need 1 policy to block communication between 2 Teams)?