Redux Toolkit (RTK) is the official, recommended way to write Redux code today. It simplifies a lot of the painful parts of plain Redux.

Feature	Plain Redux	Redux Toolkit (RTK)
Boilerplate	High (manual setup of actions, reducers)	Minimal (auto-generated setup)
Reducer Writing	Manual	createSlice automates it
Async Code	Manual with Thunks	createAsyncThunk simplifies it
Configuration	Manual store setup	configureStore with sensible defaults
Mutating State	Not allowed directly	Allowed internally with immer (but still immutable)
Learning Curve	Steeper	Easier for beginners

Key takeaway:
Redux Toolkit makes Redux development faster, cleaner, and less error-prone, while still giving you full control when needed.

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