In order to resize your Azure virtual machine, you’ll first need to check the available resizing options:

az vm list-vm-resize-options --resource-group YourResourceGroup --name YourVMName -o table

Depending on the purpose of your Azure virtual machine, you’ll need to choose a size for it when you’re creating it. Plus, the availability of Azure resources depends on the region you’ll want to use them. You can list available Azure predefined virtual machine sizes by using:

az vm list-sizes --location westeurope -o table

For example, if you need to view all available virtual machine images published by Microsoft, you can use:

az vm image list --publisher Microsoft -o table

In order to view what Azure virtual machines are existing within your subscription or, in this case, a particular resource group, you can use:

az vm list --resource-group YourResourceGroup -o table

In order to create an Azure virtual machine, let’s say Ubuntu, you can use:

az vm create --name YourVMName --resource-group YourResourceGroup --admin-username myuser --image UbuntuLTS --public-ip-sku Standard --generate-ssh-keys --verbose