Code Completion is a feature in programming environments that helps developers write code more efficiently. It suggests possible code snippets, functions, or variables as the programmer types, reducing the amount of typing required and minimizing errors. This feature is especially useful for beginners who may not remember all the syntax or available functions. Typically found in Integrated Development Environments (IDEs) and text editors, Code Completion can enhance productivity by speeding up the coding process. It often includes context-aware suggestions, meaning it can provide relevant options based on the current code context, making it easier to write complex programs.