In this assignment, the impact of external factors on Southwest Airlines' revenues and profits is discussed. The four pillars under IATA's strategy to address climate change are technology, environmental, industry rivalry, entry and exit, substitutes, suppliers, and buyers. Technology advancements have improved on-time performance, reduced noise by 30%, and enhanced ticketless travel. Environmental regulations influence operational costs, while the airline has implemented measures to reduce greenhouse gas emissions. Industry rivalry is high due to low differentiation of services and low switching costs for consumers. Entry barriers are substantial, but the airline's point-to-point strategy and economical prices have reduced expenses. Substitutes include automobile travel and train transportation. Suppliers' power originates from limited numbers or unique resources, affecting input prices. The bargaining power of customers is impacted by information availability and the airline's efficiency.