Module

A module in software development is a self-contained unit or component of a larger system that performs a specific function or task. It operates independently but often works with other modules to enable the overall functionality of the system. Modules are designed to be independently developed, tested, and maintained, which increases flexibility and code reusability.

Key characteristics of a module include:

1. Encapsulation: A module hides its internal details and exposes only a defined interface (API) for interacting with other modules.
2. Reusability: Modules are designed for specific tasks, making them reusable in other programs or projects.
3. Independence: Modules are as independent as possible, so changes in one module don’t directly affect others.
4. Testability: Each module can be tested separately, which simplifies debugging and ensures higher quality.

Examples of modules include functions for user management, database access, or payment processing within a software application.