Hello there,
If you want to migrate a VM packaged in OVA format to Azure, we'll need to convert it to the VHD (Virtual Hard Disk) format first which is supported by Azure.
The OVF Import/Export tool consists of Windows PowerShell cmdlets that enable users of System Center 2012 – Virtual Machine Manager (VMM) to import and export virtual machines that are packaged in the OVF format
Using OVF Packages to Create Virtual Machines in System Center Virtual Machine Manager 2012
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