> For the complete documentation index, see [llms.txt](https://www.ngxs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.ngxs.io/v21.0/introduction.md).

# INTRODUCTION

- [WHY](https://www.ngxs.io/v21.0/introduction/why.md)
- [INSTALLATION](https://www.ngxs.io/v21.0/introduction/installation.md)
- [STARTER KIT](https://www.ngxs.io/v21.0/introduction/starter-kit.md)
- [SCHEMATICS](https://www.ngxs.io/v21.0/introduction/schematics.md)