$TrafficManagerProfileName="startrafficmgr"
$ResourceGroupName ="TestRG"
$TargetResourceId="/subscriptions/5d216802-439c-4ef6-87aa-26223a1611df/resourceGroups/myrg/providers/Microsoft.Web/sites/starwebapp2"
$TargetEndPoint="starwebapp2.azurewebsites.net"



$TrafficManagerEndpoint = New-AzTrafficManagerEndpoint -Name "Staging" `
-ProfileName $TrafficManagerProfileName -Type AzureEndpoints `
-TargetResourceId $TargetResourceId -EndpointStatus Enabled `
-Weight 100 -ResourceGroupName $ResourceGroupName 

Add-AzTrafficManagerCustomHeaderToEndpoint -TrafficManagerEndpoint $TrafficManagerEndpoint -Name "host" -Value $TargetEndPoint
Set-AzTrafficManagerEndpoint -TrafficManagerEndpoint $TrafficManagerEndpoint