# Introduction

![](.gitbook/assets/logo_documentation_1.0.png)

[Fluentd](https://www.fluentd.org/) is an open-source data collector for a unified logging layer. Fluentd allows you to unify data collection and consumption for better use and understanding of data.

[Fluentd](https://www.fluentd.org/) is licensed under the terms of the [Apache License v2.0](https://www.apache.org/licenses/LICENSE-2.0). This project is made and sponsored by [Treasure Data](https://www.treasuredata.com).

## FAQ

* Q. How to update sidebar (Table of Contents) ?
* A. Update SUMMARY.md

* Q. How to control redirects?
* A. Update .gitbook.yaml