I'm not looking for a technical definition -- rather a practical definition. Actually, I asked for examples, so a definition may not be necessary, as long as the examples offer sufficient clarity.
It's important that when the CCWG/Commenters/SOs/ACs/etc. look at the word "services" (or the word services plus some exemplars), they all see the same thing.
Otherwise, we are like "The Six Blind Men and the Elephant" (apologies for culturally-specific, archaic and politically incorrect reference; please note as a counterbalance that I am a member of the CCWG-Accessibility, seeking to improve web access (and ICANN access) for people with disabilities).