Design systems are often treated as a one-time initiative – something teams build, document and move on from. In reality, the most successful design systems aren't projects at all – they're products. In this talk, I'll explore how shifting your mindset from 'project' to 'product' can transform the way teams build, scale and work together. I'll unpack how design systems drive consistency, accelerate development and enable reuse across multiple business units while reducing duplication and technical debt. Through practical examples in React, you'll see how to structure, build and evolve a design system that's scalable, maintainable and actually adopted by teams. Whether you're starting from scratch or refining an existing system, this session will give you the tools and perspective to build something that lasts.