What does a design system include?
A design system should include any element that you want to be standard across platforms. The best design systems contain both UI elements (a catalog of reusable components), as well as standard brand guides including the color palette, typography, and iconography. Some other elements to consider: Data visualizations.
What is a design system in UI?
A design system is a collection of reusable UI components. In it, you can define UI elements such as buttons as well as text elements and other elements that you're sure will be reused throughout the design file. This makes the design workflow very easy.
Why use a design system?
One benefit of a design system is built-in consistency through a single source of truth with tried and tested components that can be applied to any project. This significantly improves the product development process by scaling design across an organization and ensuring improved UX, UI, and product delivery.