Azure Migrate now supports adding multiple credentials for the discovery and assessment of physical servers (in preview). In addition, the number of servers that can be discovered per appliance has been increased from 250 to 1,000.
The appliance for physical servers can be installed on an existing server running Windows Server 2016. While configuring the appliance, you have the ability to provide multiple credentials for discovery and assessment of Windows and Linux servers on-premises. The appliance can be also used to discover and assess virtual machines when there’s no access to the hypervisor, as well as virtual machines on any other cloud.
For more details, read the documentation.