Description: A subkey of the Windows Registry is a key within another key in the hierarchical structure of the Windows Registry. The Registry is a database that stores settings and options for the operating system, as well as for applications and hardware. Subkeys allow for more efficient organization and categorization of information, facilitating access and modification of data. Each subkey can contain values, which are the specific data associated with that key, and other subkeys, creating a nested structure. This hierarchical organization is fundamental to the operation of many computer systems, as it allows operating systems and applications to quickly access the necessary configuration to operate correctly. Subkeys are essential for system customization, as users can modify specific settings, such as software preferences or hardware adjustments, through these keys. In summary, Windows Registry subkeys are key components that enable efficient management of system and application configuration, contributing to the stability and customization of the operating environment.