*** Make your applications production-ready. #### **Testing**: - Learn and use tools like **Jest** and **React Testing Library**. - Write unit, integration, and end-to-end (E2E) tests (e.g., Cypress). #### **Deployment**: - Deploy your React apps on platforms such as: - **Vercel** or **Netlify** (for good CI/CD support). - Traditional cloud providers like AWS, GCP, or Azure.