Enable Exchange Online In-Place Archive By Default via Policy
Currently, there is no method to enable in-place archive by default for users. This should be configurable via policy. Right now the only way to accomplish this is by using PowerShell when creating new mailboxes or periodically via a script, which should not be necessary. Please expose a setting in the mailbox policy or elsewhere that allows enabling In-Place archiving by default on all users, existing and new, if desired by the organization.