> For the complete documentation index, see [llms.txt](https://docs.fluentbit.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fluentbit.io/manual/1.9/about/what-is-fluent-bit.md).

# What is Fluent Bit?

Fluent Bit is a CNCF sub-project under the umbrella of Fluentd

​[Fluent Bit](http://fluentbit.io/) is an open source and multi-platform log processor tool which aims to be a generic Swiss knife for logs processing and distribution.

Nowadays the number of sources of information in our environments is ever increasing. Handling data collection at scale is complex, and collecting and aggregating diverse data requires a specialized tool that can deal with:

* Different sources of information
* Different data formats
* Data Reliability
* Security
* Flexible Routing
* Multiple destinations

[Fluent Bit](https://fluentbit.io) has been designed with performance and low resources consumption in mind.


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