A design system is a collection of reusable components, guidelines, and standards that help teams create consistent and cohesive user interfaces. It includes elements like colors, typography, buttons, and layout patterns, ensuring that products maintain a unified look and feel across different platforms and devices. By using a design system, organizations can streamline their design and development processes, making it easier to collaborate and maintain quality. This approach not only saves time but also enhances user experience by providing familiar interactions and visual elements, ultimately leading to more effective and engaging products.