The global Passenger Service System (PSS) market is expected to reach USD 10,730 million by 2028, growing at a CAGR of 6.2% during the forecast period. Airline inventory systems accounted for the majority of the PSS market in 2021 and are projected to continue growing in the post-COVID-19 era. The market is segmented into various regions, including North America, Europe, Asia-Pacific, and South America, with China holding the largest market share in 2021. The report provides a detailed analysis of the market, including key factors driving growth, major players, and emerging technological developments. It also examines industry challenges such as regulatory policies, changing consumer preferences, and economic factors. The report aims to provide readers with a comprehensive understanding of the market dynamics and help them make informed business decisions.