The Australian Government Civil Aviation Safety Authority make clear their definition of a UAS Operator, and simplfy the process for obtaining a licence.
“You are a UAS Operator if you conduct air work – this includes commercial tasks (hire and reward), demonstrations, training, R&D, flying for company internal purposes, etc. This distinguishes you from people who fly model aircraft for sport, recreation and/or education.
If you fly an unmanned aircraft, you are part of the aviation industry and have a number of responsibilities and regulatory requirements.”
Link through to the official notice here.