DLL (Dynamic Link Library)

A Dynamic Link Library (DLL) is a file containing code and data that multiple programs can use simultaneously. Instead of each program having its own copy, DLLs enable shared functionality, saving memory and disk space. When a program runs, it loads the necessary DLLs to access features like graphics, network connections, or device drivers. This modular approach allows easier updates—updating the DLL updates all programs that depend on it automatically. DLLs promote efficient resource use and streamline software development by enabling code reuse across different applications.