Export users

Hi all,

We create users in on-premises Active Directory, and they are synchronized to Azure AD. I have two requirements:For every user in Azure, I see an Object ID. Is this Object ID coming from the on-premises Active Directory, or is it assigned by Azure AD?

is the below syntax correct, please correct me.

$users = Get-MgUser -All | ForEach-Object {
    $licenses = (Get-MgUserLicenseDetail -UserId $_.Id).SkuPartNumber -join "; "
    [PSCustomObject]@{
        ObjectId        = $_.Id
        UserPrincipalName = $_.UserPrincipalName
        Email           = $_.Mail
        DisplayName     = $_.DisplayName
        License         = $licenses
    }
}
$users | Export-Csv -Path "C:\temp\output.csv" -NoTypeInformation

I have an application that needs to fetch Azure AD users along with their Object IDs. I have created an Azure App Registration and given it the User.Read (delegated) Graph API permission. Is this API permission sufficient to get Azure AD users along with their Object IDs?