# Core

- [Devtools](/v27/core/devtools.md)
- [Configuration](/v27/core/structuring-the-app.md)
- [State](/v27/core/defining-state.md)
- [Actions](/v27/core/writing-application-logic.md)
- [Effects](/v27/core/running-side-effects.md)
- [Operators](/v27/core/going-functional.md)
- [Server Side Rendering](/v27/core/server-side-rendering.md)
- [Typescript](/v27/core/typescript.md)