@Mac Freeman Thank you for your post and I apologize for the delayed response!
The information you've posted is not enough and the question is too generic in nature.
Appreciate if you could provide more details such as
Which scenario are you using?
For example: Migration of Hyper-V VMs to Azure, VMware to Azure or Physical machine on-premise to Azure.
Sharing a few links may be helpful:
Azure cloud migration best practices checklist
Troubleshoot Azure Migrate issues
Azure Migrate appliance architecture
Agent-based migration architecture
Hope this helps!