Forum Discussion
Need to share the exchange Global Address List (GAL) between two organizations in same group
We have a single enterprise agreement with two tenants. Both the organizations are under same group. One tenant is on hybrid exchange setup with O365 and on-premise exchange while the other tenant i...
Sharing of https://bit.ly/3ghpiaG or moving user mailboxes between Exchange Online organizations in different Microsoft plans is not supported in federated sharing.
https://docs.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/sharing-and-collaboration?redirectedfrom=MSDN
To me 3rd party is a better solution and multiple companies are offering it.