This document discusses the evolution of air transport and technology from the 1960s to present day. It covers the development of computer reservation systems (CRS) by airlines in the 1960s-1970s and the rise of global distribution systems (GDS) like Galileo, Worldspan, and Amadeus in the 1980s. It also discusses how the internet led to direct sales by airlines on their websites, challenging the traditional role of travel agencies. Finally, it contrasts the low-cost carrier model with airlines that have adopted a "healthy quality" approach with luxury amenities on long-haul flights.