Boeing Company is a major aerospace and defense firm that designs, develops, manufactures, and supports a diverse portfolio of products and services worldwide. The company operates through three primary segments: Commercial Airplanes, which develops and produces commercial jet aircraft for passenger and cargo transport; Defense, Space & Security, which engages in research, development, and production of military aircraft, weapons systems, satellites, and missile defense solutions; and Global Services, which provides aftermarket support including maintenance, spare parts, pilot training, engineering modifications, and digital services to both commercial and defense customers. Boeing competes globally with firms like Airbus in commercial aviation and with defense contractors such as Lockheed Martin and Northrop Grumman in the defense sector. The company serves airlines, militaries, government agencies, and businesses worldwide through direct sales, partnerships, and its service networks. Founded in 1916 and headquartered in Arlington, Virginia, Boeing remains one of the world's most influential aerospace and defense companies.