Microsoft Entra ID can be used to manage Exchange online mailboxes, distribution lists, and mail-enabled security groups. The Microsoft Entra ID connector uses Exchange Online PowerShell Module through IQService to support this feature.
This is the companion discussion topic for the documentation at https://documentation.sailpoint.com/connectors/microsoft/entra_id/help/integrating_entra_id/exchange_online_mailbox_management.html