You plan to migrate 50 virtual machines from VMware vSphere to an Azure subscription and you have already created a Recovery Services vault. What should you do next to prepare the migration?

To migrate VMware VMs to Azure, you first need a destination for them in Azure. Configuring a virtual network (VNet) creates the necessary network infrastructure within Azure where the migrated VMs will reside and connect. Without a VNet, there's no network for the VMs to join post-migration. An extended network is a concept related to stretching an on-premises network to Azure, which is not the immediate next step for preparing a migration. Creating a recovery plan is part of orchestrating the migration process itself, but it depends on having the target network configured first. Deploying an Open Virtualization Appliance (OVA) template to vSphere is a step for setting up the Azure Site Recovery replication appliance on-premises, which comes after establishing the Azure network destination.