No, this isn't talking about a service. It's talking about apps that come with the system, that can't be removed, that have advertising in them.
None of the apps that come with iOS use iAds. Same with Android.
None of the apps that come with iOS use iAds. Same with Android.
They can be removed and it's up to the OEM whether they come with the system. I don't recall if a clean install gives you the option to opt out of these apps or not, though.