> For the complete documentation index, see [llms.txt](https://docs.mernkit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mernkit.com/back-end.md).

# Back-end

- [Application Structure](https://docs.mernkit.com/back-end/application-structure.md)
- [Environmental Variables](https://docs.mernkit.com/back-end/environmental-variables.md)
- [Google and Facebook Auth](https://docs.mernkit.com/back-end/google-and-facebook-auth.md)
- [API](https://docs.mernkit.com/back-end/api.md)
- [Deployment](https://docs.mernkit.com/back-end/deployment.md)