anonymous user When going through creating a Migrate Project you will be asked what region to create the project in. This is only used to store the information regarding the Project itself. Such as assessment info, servers, type of migration etc.
When you then go through and do the migration, you will be specifically asked which region to migrate the VM to.
Here is a document outlining the supported regions for project creation and a bit more explanation
https://learn.microsoft.com/en-us/azure/migrate/migrate-support-matrix#supported-geographies-public-cloud
Here you can see directly under step 6 that you specify the target region for migration/replication when you enable replication on the VM.
https://learn.microsoft.com/en-us/azure/migrate/tutorial-migrate-vmware#replicate-vms
Hope this helps!
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