Microfrontends: Lessons Learned from Growing a Design System and Shared Libraries Across 20+ teams

Scaling a microfrontends architecture across 20+ teams is challenging not just technically, but organizationally. In this talk, I’ll share the practical lessons learned from leading the growth of a large Design System and multiple shared libraries in a highly distributed environment. We’ll explore how to keep teams autonomous while maintaining consistency, how to evolve UI components and SDKs without breaking dozens of codebases, and which governance models actually work when hundreds of developers are contributing in parallel. You’ll see real strategies for handling semantic versioning, coordinated releases, backward compatibility, and cross-team collaboration, as well as the pitfalls we encountered and the solutions that helped us move faster. Whether your organization is adopting microfrontends or already feeling the pain of scaling shared infrastructure, this session will give you actionable guidance to avoid bottlenecks, reduce friction, and build a healthier ecosystem. This is a talk built from real experience, real failures, and real wins designed to help you scale with confidence.