Module

A module is a self-contained unit within a larger system or program that performs a specific function or set of functions. Think of it as a building block—like a piece of a puzzle—that can be developed, tested, and used independently, then combined with other modules to create a complete application. Modules help organize complex systems, making them easier to manage, update, and troubleshoot. They can also promote reusability, since the same module can be used in different parts of a program or in different projects. Overall, modules improve efficiency and clarity in system design.