Function Test-IsWebServer {
<#
.SYNOPSIS
    Used to determine if the current server is a Web tier server

.PARAMETER ComputerName
    [string] Optional. Specify a computer name instead of inspecting the local computer name.
#>
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param(
        [Parameter(Mandatory = $false)]
        [string]$ComputerName = $null
    )

    if ([string]::IsNullOrWhiteSpace($ComputerName)) {
        $ComputerName = (Get-FullyQualifiedServerName)
    }

    # Then let's check the server name
    if ($ComputerName.ToUpper().StartsWith("WEB")) {
        return $true
    }

    # Put any future checks here

    return $false
}

Set-Alias IsWebServer Test-IsWebServer -Force -Scope:Global