Hi @Chrisk ,
is there a VPN gateway running between the on-premises and Azure environment?
Or it's a full migration -> All listed VMs should be migrated to Azure and nothing is left on-premises?
The easiest option to migrate on-premises computers to Azure should be Azure Migrate.
To get started with Azure Migrate please take a look here: https://learn.microsoft.com/en-us/azure/migrate/migrate-services-overview
On the left side of the webpage you will find different tutorials and concepts.
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Regards
Andreas Baumgarten