Param (
    [string]$displayName = "SVC-Nework-Gateway-Updater",
    [string]$firstName = "Network-Gateway",
    [string]$lastName = "Updater-Account",
    [string]$upn = "svc_network-updater@yourDomain.onmicrosoft.com",
    [string]$password = "MyPassword#12345",
    [string]$usageLocation = "US"
)

$oCred = Get-Credential -Message "Enter Admin Credentials for O365..."
Connect-MsolService -Credential $oCred

$user = New-MsolUser -DisplayName $displayName `
             -FirstName $firstName `
             -LastName $lastName `
             -UserPrincipalName $upn `
             -UsageLocation $usageLocation `
             -ForceChangePassword:$false `
             -PasswordNeverExpires:$true `
             -Password $password