Here’s a account of a 30 day experiment I did using only Office Online. For clarification, I will refer to the Office installed locally as (desktop) and Office products in the browser from Office 365 as (online).
Rules of the Experiment
Parameters of the experiment were pretty simple: unless jeopardizing my job or customer, I was only going to use Office (online) – no Office (desktop). This means I authored, edited, shared and presented content all from Office 365.