Install-IIS

<#
.Synopsis
   Install IIS and Windows required features, for 1 or more computers.
   Requires PS3
   Requires Windows 2008 R2 or higher
.Description
   To see the current list of installed features, use [Get-WindowsFeature]
   The system must be rebooted after installation
   To remove a feature, use... Remove-WindowsFeature, eg Remove-WindowsFeature bits
.Example
   Install-IIS -ComputerSet "Dennis2008R2SP1","localhost"
.Example
   Install-IIS "Dennis2008R2SP1","localhost"
.Example
    "Dennis2008R2SP1","localhost" | Install-IIS
#>
function Install-IIS
{

    Param (
        [Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)]
        [string[]]
        $ComputerName
    )

    Begin {
        Import-Module ServerManager
    }
    Process {
        foreach ($computer in $ComputerName) {
            "Processing [$computer]..."
            $session = New-PSSession -ComputerName $computer
            Invoke-Command -Session $session -ScriptBlock {
                Add-WindowsFeature Application-Server, NPAS, BITS, Web-Server, Net-Framework, RDS-RD-Server -IncludeAllSubFeature -Restart -Concurrent
            }
            Remove-PSSession $session
        }
    }
}