In 2014, the Fluentd team at Treasure Data was forecasting the need for a lightweight log processor for constraint environments like embedded Linux and gateways. The project aimed to be part of the Fluentd ecosystem. At that moment, Eduardo Silva created Fluent Bit, a new open source solution, written from scratch and available under the terms of the Apache License v2.0.

After the project matured, it gained traction for normal Linux systems. With the new containerized world, the Cloud Native community asked to extend the project scope to support more sources, filters, and destinations. Not long after, Fluent Bit became one of the preferred solutions to solve the logging challenges in Cloud environments.