The major technologies that work together to make REMnux possible are:
SaltStack State Files: Manage the installation and configuration of the building blocks of the distro.
REMnux Installer: Start the installation and upgrade of the distro.
State Files Without the REMnux Installer: Invoke SaltStack directly without the REMnux installer, if necessary.
Debian Packages: Bundle software components for a reliable installation and updates.
Website and Docs: Generate and host the REMnux website and this documentation.
You can read about how REMnux uses these technologies to learn from the approach and, if you wish, to contribute new tools to the project.