eBay operates a global marketplace used by millions of people across many regions, platforms and devices.

To support this scale, eBay introduced a new Design System called Evo, which defines foundations, components, brand expression, accessibility and interaction patterns across product and marketing experiences.

The answer was not just better components, but better documentation tooling and engagement.

Previous versions of the eBay playbook focused mainly on product guidance, while brand content, accessibility, content strategy and marketing were fragmented or missing.

Documentation was hard to update because designers relied on engineers to publish changes, which led to slow feedback cycles.

Teams struggled to understand which components existed on which platforms. Spreadsheets were used to track availability, but information quickly became outdated.

The team treated documentation as a product, not as a static website.

Three principles guided the work.