The ICAO code is a four-letter alphanumeric code assigned to each airport and aerodrome around the world. It is established by the International Civil Aviation Organization to ensure standardized identification of airports, making it easier for pilots, air traffic controllers, and aviation professionals to communicate effectively. Each code typically reflects the geographical location of the airport. For example, the ICAO code for Los Angeles International Airport is KLAX, where the "K" indicates the United States. These codes are distinct from the three-letter IATA codes, which are more commonly used by travelers and airlines for ticketing and baggage handling.