Alpha-3 is a term often used to refer to a three-letter code that represents countries and certain geographic areas. These codes are part of the ISO 3166-1 standard, which is maintained by the International Organization for Standardization. Each code is unique and helps in identifying countries in various applications, such as data processing and international shipping. In addition to countries, Alpha-3 codes can also represent regions and territories. For example, the code for the United States is USA, while Canada is represented by CAN. These codes facilitate easier communication and data management across different systems and organizations worldwide.