Key remapping is the process of changing the default functions of keys on a keyboard. This allows users to customize their keyboard layout to better suit their preferences or needs. For example, a user might want to swap the functions of the Caps Lock and Escape keys for easier access during gaming or programming. Many operating systems and software applications offer built-in options for key remapping. Additionally, third-party tools can provide more advanced features, such as creating complex macros or profiles for different tasks. This flexibility helps improve productivity and comfort while using a computer.