Robust design is a methodological approach in engineering and system development focused on creating products, processes, or systems that exhibit consistent and predictable performance despite the presence of uncontrolled variations, known as noise factors. It investigates methods to minimize sensitivity to these noise factors, such as environmental fluctuations, manufacturing tolerances, and component degradation, rather than attempting to eliminate the variations themselves. Key characteristics include proactive consideration of potential variations during the design stage and optimizing design parameters to achieve robustness. Its significance lies in improving quality, reliability, and resilience, reducing costs associated with failure and rework, and ensuring satisfactory operation under real-world conditions.