If you don’t currently use a design system, there’s a good chance you’re relying on a single designer to govern your brand’s design language.
What happens if this designer tragically gets hit by a bus tomorrow? Or if you want to hire a new designer, how do you onboard them quickly? How do you provide a developer with the latest design guidelines?
A design system reduces knowledge silos (and bus factor!) — it is a living product that every member of your team has access to. New hire? Send them to a fully documented, up-to-date and categorised set of design guidelines.
If used well, establishing a design system will help boost team efficiency, velocity and maintains the consistency of your design language.