# Ubuntu project > This documentation provides guidance for contributors to and maintainers of the Ubuntu Linux distribution. It covers processes and concepts, as well as project governance and team workflows. There are instructions for packaging, merging, proposed migrations, autopkgtests, and many other procedures for maintaining the Ubuntu Archive and releasing the distribution. 2026 ## Pages in this subsection - [QA and testing](https://documentation.ubuntu.com/project/contributors/qa-and-testing.md): Quality assurance (QA) testing is critical to the reliability and stability of - [How to report a bug](https://documentation.ubuntu.com/project/contributors/qa-and-testing/report-a-bug.md): Once a bug is filed, be prepared to answer questions, provide additional details, and test fixes. En... - [Application testing](https://documentation.ubuntu.com/project/contributors/qa-and-testing/application-testing.md): **Placeholder** - [Manual ISO testing](https://documentation.ubuntu.com/project/contributors/qa-and-testing/iso-testing.md): **Placeholder** - [Hardware testing](https://documentation.ubuntu.com/project/contributors/qa-and-testing/hardware-testing.md): **Placeholder** - [Upgrade testing](https://documentation.ubuntu.com/project/contributors/qa-and-testing/upgrade-testing.md): **Placeholder** - [Pre-release testing](https://documentation.ubuntu.com/project/contributors/qa-and-testing/pre-release-testing.md): **Placeholder** ## Optional - [Top-level llms.txt](https://documentation.ubuntu.com/project/llms.txt): Complete documentation index.