ISO 639-1 Codes are two-letter codes that represent languages. Developed by the International Organization for Standardization, these codes help standardize language identification in various applications, such as software, websites, and databases. For example, "en" stands for English, while "fr" represents French. These codes are part of a larger set of standards that include ISO 639-2 and ISO 639-3, which provide three-letter codes and additional details about languages. The use of ISO 639-1 Codes facilitates clear communication and data exchange across different languages and cultures, making it easier to identify and work with diverse linguistic content.