Next, we need to create a resource group and the required network resources. We need to create two subnets – one for the application gateway and one for the backend pool – which we will create later in this demo. Take the following steps:

1. Create a resource group, as follows:

New-AzResourceGroup -Name PacktApplicationGateway -Location EastUS

2. Create the network resources, as follows:

$PacktAGSubnet = New-AzVirtualNetworkSubnetConfig `
  -Name PacktAGSubnet `
  -AddressPrefix 10.0.1.0/24

3. Create the subnets, as follows:

$PacktBackendSubnetConfig = New-AzVirtualNetworkSubnetConfig `
  -Name PacktBackendSubnetConfig `
  -AddressPrefix 10.0.2.0/24

4. Create the VNet, as follows:

$vnet = New-AzVirtualNetwork `
  -ResourceGroupName PacktApplicationGateway `
  -Location eastus `
  -Name PacktVNet `
  -AddressPrefix 10.0.0.0/16 `
  -Subnet $PacktAGSubnet, $PacktBackendSubnetConfig

5. Create the public IP address, as follows:

$pip = New-AzPublicIpAddress `
  -ResourceGroupName PacktApplicationGateway `
  -Location eastus `
  -Name PacktAGPublicIPAddress `
  -AllocationMethod Dynamic