# Packaging Technical specifications for Launchpad’s package build infrastructure, including Personal Package Archives (PPAs), build specifications, builder availability and scoring, and source build management. #### IMPORTANT This document has been migrated from help.launchpad.net as is, and has not yet been revised. The content might be outdated, links and images could be broken. We are aware and will fix any issues as soon as possible. * [Personal Package Archives](https://ubuntu.com/docs/launchpad/user/reference/packaging/ppas/index.html.md) * [Build scores](https://ubuntu.com/docs/launchpad/user/reference/packaging/build-scores/index.html.md) * [Builder Specs](https://ubuntu.com/docs/launchpad/user/reference/packaging/builder-specs/index.html.md) * [Source builds](https://ubuntu.com/docs/launchpad/user/reference/packaging/source-builds/index.html.md)