The report "Airports 4.0: Impact of Digital Transformation on Airport Economics" discusses the role of digital transformation in the airport industry. The authors argue that airports are at the forefront of global challenges and innovations, and that digital transformation is a key factor in their success. They define "Airport 4.0" as an airport that has fully embraced digital technology and is using it to improve customer experience and operations. The report predicts that airport expenses on digital-based solutions will grow by about 40% by 2020, with a focus on areas such as baggage sorting, check-in, security, and resource management. The authors also note that airports are public service infrastructure and economic entities, and that they must balance the need for smart technology with the need to provide a public service.