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You can use Azure migrate solution to migrate VMware VMs as per the https://learn.microsoft.com/en-us/azure/migrate/tutorial-assess-vmware-azure-vmware-solution to either Azure VMs or to Azure VMware solution as per the document
Converting OVA to azure image is not supported by Azure migrate.
You can use Azure migrate if you mount the OVA on premise to be VMware VM and then you can migrate the VM to either Azure VM or Azure VMware solution as per the documents above.
Please let me know if you have any other questions.
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