Lightweight design refers to the practice of creating products or structures that are both strong and minimal in weight. This approach is often used in industries like aerospace, automotive, and architecture to improve efficiency and performance. By using advanced materials and innovative engineering techniques, designers can reduce the overall weight without compromising safety or functionality. The benefits of lightweight design include enhanced fuel efficiency, lower material costs, and improved ease of handling. For example, in the automotive industry, lighter vehicles consume less fuel, while in aerospace, reduced weight can lead to lower operational costs and increased payload capacity.