Scaling the BBC's Web Design System at 4.8 Billion Requests

Discover how the BBC Engineering team successfully scaled their WebCore design system to handle over 4.8 billion monthly requests across 10 major BBC brands in this 51-minute conference talk from QCon London. Learn about the critical strategies and custom tooling developed to manage one of the world's largest web design systems, including their federated "gardening" contribution model that enables flexible onboarding for different disciplines while maintaining consistency. Explore the innovative theming tokens system that acts as "levers" for brand customization, the mandatory ownership model that prevents orphaned components, and the sophisticated color picker tooling solution that enables dynamic, accessible branding across 235 sub-brands. Gain insights into the collaboration challenges of maintaining a design system at massive scale and understand the key principles for building maintainable design systems that can serve billions of users while supporting diverse brand requirements and cross-functional team contributions.