When products grow, interfaces drift. Every new feature reinvents a button, a form, a modal — and the experience fragments while velocity slows.
A design system fixes this at the root. By codifying tokens, components, and patterns in one documented library, every team pulls from the same source. New screens compose from tested building blocks instead of starting from scratch.
The payoff compounds: consistency improves, accessibility is baked in, and engineers ship features instead of re-styling primitives. A design system is one of the highest-leverage investments a scaling product team can make.