How do you align components and interface rules?

A UI kit mainly lists visual elements. A design system adds usage rules, variants, states, composition principles, and the decisions that prevent drift.

It is better to start with the most used components and truly recurring cases rather than trying to cover the whole product in one pass.

It depends on the topic. On some products, you first need to simplify key journeys. On others, you first need shared building blocks so the redesign does not drift in every direction.

Yes. Good alignment must be translatable on the development side with reusable components, clear states, and decisions that remain easy to maintain.

Yes. You can progressively revisit priority areas and establish a framework that later extends to new views or major evolutions.

By framing real use cases, required states, and legitimate exceptions. Too many variants break the very promise of consistency.

Most often, a prioritized library, usage rules, variants, reference mockups, and handoff principles for development.

Yes, when the team needs it. The right format depends on product maturity and the level of autonomy expected between design and development.

The main benefit is twofold: a more consistent interface for users and a faster, more reliable, more maintainable production process for the team.