I see a number of articles regarding preview for Office 365 saying how much one would save for one year with multiple computers (and a few that make multi-year comparisons and give more in-depth information sometimes siding with the traditional model, which is so much nicer than looking like a middle-school cheerleader for Microsoft), but I so far can't see one simple topic - Whether or not one needs an active internet connection to use 365 or 2016.

Can anyone help me here please?