The aspect of usability in software design refers to how easy and intuitive a software application is for users to operate. It encompasses factors such as navigation, user interface design, and the overall user experience. Software with high usability allows users to accomplish their tasks efficiently and effectively, minimizing frustration and confusion. By prioritizing usability, designers improve customer satisfaction and can reduce training time. Ultimately, enhancing usability leads to increased adoption rates and positive user feedback, contributing significantly to a product's success in the market.