Why design systems matter more than ever

A design system is not a component library. The library is the artefact; the system is the set of agreements that keeps the library from drifting six months after it ships.

Most systems fail in the same place. Tokens are defined, components are built, and then a deadline arrives and someone hardcodes a colour. Nothing catches it, so it happens again, and within a year the system describes a product that no longer exists.

What makes systems hold is not documentation. It is that using the system is the path of least resistance — the tokens are easier to reach for than the hex value, and the component is faster than rebuilding the markup.

The return is not consistency for its own sake. It is that a small team can ship at the pace of a much larger one, because most of the decisions on any given screen have already been made and do not need relitigating.