> For the complete documentation index, see [llms.txt](https://tutorial.specian.co.uk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tutorial.specian.co.uk/backend.md).

# Backend

- [Files organisation](https://tutorial.specian.co.uk/backend/files-organisation.md)
- [Environment config](https://tutorial.specian.co.uk/backend/environment-config.md)
- [Express API](https://tutorial.specian.co.uk/backend/express-api.md)
- [Security](https://tutorial.specian.co.uk/backend/security.md)
- [Database](https://tutorial.specian.co.uk/backend/database.md)
- [GraphQL](https://tutorial.specian.co.uk/backend/graphql.md)
- [User authentication](https://tutorial.specian.co.uk/backend/user-authentication.md)
- [Conclusion](https://tutorial.specian.co.uk/backend/conclusion.md)