# Connect to your azure subscription
Connect-AZAccount

# First we need a resouce group to put it all together
$rgName   =  "RG-VNET"
$location = "North Europe" 
New-AZResourceGroup -name $rgName -Location $location

# Create a virtual network
# Create subnet config
$subnetConfig0 = New-AZVirtualNetworkSubnetConfig `
  -Name "mySubnet0" `
  -AddressPrefix 10.1.0.0/24

# Create the virtual network
$vnet = New-AZVirtualNetwork `
  -ResourceGroupName $rgName `
  -Location $location `
  -Name "myVnet" `
  -AddressPrefix 10.1.0.0/16 `
  -Subnet $subnetConfig

# Add more subnets to Virtual Network
Add-AzVirtualNetworkSubnetConfig -name "mysubnet1" -VirtualNetwork $vnet -AddressPrefix "10.1.1.0/24" | Set-azVirtualNetwork
Add-AzVirtualNetworkSubnetConfig -name "mysubnet2" -VirtualNetwork $vnet -AddressPrefix "10.1.2.0/24" | Set-azVirtualNetwork
Add-AzVirtualNetworkSubnetConfig -name "mysubnet0" -VirtualNetwork $vnet -AddressPrefix "10.1.0.0/24" | Set-azVirtualNetwork