Understand what a design system is, what it contains, and when a project actually needs one.

You can decide whether a design system is worth building and where to start.

• Learn the difference between a style guide, a component library, and a design system
• Audit an existing product to find inconsistency
• Define the smallest useful starting scope

Define the foundations, because tokens and naming decide how far a system will stretch.

You can define a token layer that keeps design and code speaking the same language.

• Create design tokens for colour, type, spacing, radius, and elevation
• Name tokens so their purpose is obvious to designers and developers
• Build primitive components on top of those tokens

Build and document a component library that other people can use without asking you.

You can ship a documented component library a team can adopt immediately.

• Design components with clear properties, states, and composition rules
• Write usage documentation that includes what not to do
• Bake accessibility into components rather than adding it later

Govern a living system so it keeps up with the product instead of being abandoned.

You can run a design system as a product with users, a roadmap, and measured adoption.

• Set contribution, review, and deprecation processes with clear owners
• Version the system and communicate breaking changes ahead of time
• Track adoption and gather feedback from the teams using it