ATM
Air traffic management (ATM) encompasses all systems that assist aircraft to depart from an aerodrome, transit airspace and land at a destination aerodrome, including Air Traffic Control, Air Traffic Services, Airspace Management, and Air Traffic Flow and Capacity Management. ATM is key for the air safety and the efficiency of air services.
Authenticity
It is a concept related to information assurance, which refers to the guarantee that information is genuine and from bona fide sources.