As more and more teams embrace DesignOps, practices and tooling in this space mature, too. Many of our teams now work with what could be called UI dev environments, which provide a comprehensive environment for quickly iterating on UI components, focusing on collaboration between user experience designers and developers. We now have a few options in this space: Storybook, react-styleguidist, Compositor and MDX. You can use these tools standalone in component library or design system development as well as embedded in a web application project. Rather than spinning up the app, plus a BFF, plus services simply to add a feature to a component, you can start up the Storybook dev server instead.