These milestones summarize the maturity lifecycle of UI components in Primer. Components must meet all criteria before proceeding to a given milestone.
Proof-of-concept built outside of Primer.
The component is ready for preliminary usage, with breaking changes expected.
The component meets most maturity criteria, and use is encouraged for most scenarios.
The component is significantly mature and usage is strongly encouraged, with long-term support expected.
The component will be removed in the future and should be avoided.
The component no longer exists in Primer.