A Garbage Collector is a form of automatic memory management used in programming languages like Java and C#. Its primary function is to identify and reclaim memory that is no longer in use, helping to prevent memory leaks and optimize resource usage. By automatically freeing up memory, it allows developers to focus more on writing code rather than managing memory manually. The Garbage Collector works by periodically scanning the program's memory to find objects that are no longer referenced or needed. Once identified, it removes these objects, making space for new data. This process enhances the efficiency and stability of applications, especially those that run for extended periods.