Air-service development is the airport's effort to persuade airlines that a route deserves aircraft capacity which could be deployed elsewhere. That requires a credible view of origin-and-destination traffic, connecting demand, tourism, corporate travel, route costs, slots and longer-term market potential. Leon Verhallen's Brussels Airport conversation revisits Jet Airways' former scissor hub and distinguishes airport ambition from airline economics. Federico Scriboni explains how Rome Fiumicino prepares market cases while investing for growth. Ioanna Papadopoulou examines the conditions behind Athens attracting new service, while Wilco Sweijen discusses Schiphol's structural slot constraints. Johan Laurberg and Chris McLaughlin offer further perspectives from Copenhagen and Dallas–Fort Worth. Together, these conversations show that incentive packages alone do not create sustainable traffic. This hub focuses on the airport's route-development work; airline network design, flight schedules and capacity allocation belong in Airline Networks & Hubs.