365 Cross-Tenant Migration

Description: If you haven't known, Microsoft has had their cross-tenant migration available to move mailboxes from 365 between 365 tenants natively. However, the documentation on it is horrible, and they don't accurately explain how to properly create the users in the destination environment.
Interface: CLI
License: Freeware
Homepage
Platforms: PowerShell Scripts.
Commentary: 

Screenshot:

Additional Details: