Redux with Redux Toolkit is the standard solution for complex global state in React applications — when Context API becomes too verbose or performance-intensive, Redux provides predictable state updates with excellent DevTools support. As the creator of CoreUI with 25 years of front-end development experience, I use Redux Toolkit (RTK) in large-scale React dashboards where multiple features share state and async data fetching needs centralized management. Redux Toolkit eliminates the boilerplate of classic Redux — no separate action creators, no switch statements, just slices with immer-powered reducers. Start with the simplest state management that works; reach for Redux when you have genuinely complex cross-component state.