Modular product design is a type of engineering design that uses interchangeable components or modules in order to create products that are easy to assemble, disassemble, customize, and upgrade. The idea behind modular design is to make a product easier for users to use and maintain over its lifespan. Modular designs also typically result in more efficient production processes since parts can be swapped out quickly and easily. Additionally, modular designs can offer more choice for the customer by allowing them the option of customization. This type of engineering offers many advantages such as lower costs for production, shorter development time frames and higher levels of scalability.