Azure virtual network (Azure VNet) is created in two cases, when you create a new VNet or when you create a new Azure virtual machine. Options are similar in both cases, but I recommend creating Azure VNet in advance and joining virtual machines to an existing VNet because this gives you a few more options.
To create a new Azure Vnet, open the Azure portal, select Create a resource and choose Virtual network in Networking services (or search for Virtual network in the search bar), as shown in the following screenshot:
You need parameters for your virtual network. The resource name must be unique ...
