What is Part 107

Part 107 is the FAA airmans certificate for commercial drone operations, (just as part 61 is a airmans certificate for a private pilot License) .IT IS NOT the $5 you pay to register your drone on the FAA drone zone web site. That is simply a registration to register your drone With the government

Commercial operations are any drone flights that are used for the furtherance of a business

It does not mean the pictures or photographs, or data is being sold.