React is a JavaScript library for building user interfaces. It is component-based, allowing developers to create reusable UI elements. React uses a virtual DOM for efficient updates and rendering. It is widely used for building single-page applications and complex interactive web interfaces.
React is our standard for building interactive web apps, because it gives us a stable, well-understood rendering and composition model that scales with product complexity. Its functional paradigm aligns well with predictable state management and testability, and the ecosystem (tooling, libraries, community knowledge) significantly reduces accidental complexity. Predictable rendering and reusable components keep UX consistent across products while letting teams ship changes quickly.
What it enables
- Clear separation of concerns via component composition
- Incremental UI changes without full rewrites
- Strong integration with TypeScript, GraphQL, and modern tooling
- Suspense-driven loading states that keep async fallbacks consistent without scattering spinners