$EnvironmentName =
'<ENVIRONMENTPREFIX>'
$ApplicationName =
'State Service'
$ApplicationProxyName = $ApplicationName
#Change below database name to fit your naming standard
$DBname = $EnvironmentName +
'_SharePoint_service_State'
New-SPStateServiceDatabase -Name $DBname | New-SPStateServiceApplication -Name $ApplicationName | New-SPStateServiceApplicationProxy -Name $ApplicationProxyName
Add-SPServiceApplicationProxyGroupMember -Identity (Get-SPServiceApplicationProxyGroup -Default) -Member (Get-SPStateServiceApplicationProxy)