Modular design is an approach that breaks down a product or system into smaller, self-contained units called modules. Each module can function independently but can also work together with other modules to create a complete system. This design method is commonly used in various fields, including architecture, software development, and manufacturing, allowing for easier updates, repairs, and customization. One of the key benefits of modular design is its flexibility. For example, in software development, developers can update or replace specific modules without affecting the entire system. Similarly, in architecture, buildings can be constructed using modular components, making it easier to expand or modify spaces as needed.