Puppet external fact to detect which cloud platform is the Windows server running on

cloud.ps1

# Puppet External Facts - Detect public cloud provider that the VM is running under
Param ([switch]$verbose)
if($verbose) {
    $VerbosePreference = "continue"
}
#region variables
$AzureMetadataServiceURI = "http://169.254.169.254/metadata/instance?api-version=2017-08-01"
$cloudProvider = $null
#endregion

#region main
$csproduct = Get-CIMInstance Win32_ComputerSystemProduct
$bios = Get-CIMInstance Win32_BIOS
$vendor = $csproduct.vendor
$serialNumber = $bios.serialNumber
Write-Verbose "Serial number: $serialNumber"

#Azure
If ($Vendor -imatch 'microsoft')
{
    try {
        $AzureMetadataRequest = Invoke-webrequest -UseBasicParsing -URI $AzureMetadataServiceURI -Headers @{'Metadata'='true'} -ErrorAction SilentlyContinue -TimeoutSec 1
    } Catch {
        Write-verbose "not an Azure VM"
    }
    If ($AzureMetadataRequest.StatusCode -eq 200)
    {
        $cloudProvider = 'azure'
        write-verbose "This is an Azure VM"
    } else {
        write-verbose "not an Azure VM"
    }
} else {
    write-verbose "not an Azure VM"
}

#AWS
If (!$cloudProvider)
{
    if ($serialNumber -imatch '^ec2*') {
        $cloudProvider = 'aws'
        write-verbose "This is an AWS VM"
    } else {
        Write-verbose "not an AWS VM"
    }
}

#GCP
If (!$cloudProvider)
{
    if ($serialNumber -imatch '^googlecloud') {
        $cloudProvider = 'gcp'
        write-verbose "This is a GCP VM"
    } else {
        Write-verbose "not a GCP VM"
    }
}

#Process output
If ($cloudProvider)
{
    Write-Host "cloud_provider=$CloudProvider"
}
#endregion