Do I need training to fly commercially?

No, not necessarily. Under the new drone rules, training depends on the type of drone you have and where you plan to use it; it is not dependent on whether or not the operation is commercial. For example, you can fly a sub 250g drone, like the DJI Mini Series, in the A1 Subcategory (flights over people) of the Open Category, without needing to conduct drone training - regardless of whether it is a commercial or recreational flight. If, however, a pilot wants to fly by the rules of the A2 Subcategory (flights close to people), they will need an A2 CofC - no matter if the flight is commercial or recreational. A flight in the A3 subcategory (flights far from people), does not require the operator to have completed drone training. But for operators wanting to fly in the Specific Category - aimed at enterprise drone missions - then GVC drone training is required, which allows pilots to apply for an Operational Authorisation (similar in scope to the old PfCO).