This is a sub-topic fork of @alzer89's Automated Qubes OS Installation using Kickstart and/or PXE Network Boot, focused on creating a repeatable guide to PXE Network Boot a RAM-based Qubes OS.

Basic concept: Your Qubes OS installation sits on another computer with the PXE server software. You can then have as many client computers as you want PXE network boot from this RAM-based Qubes OS using only their network connection and no drives needed to boot from. Your client computers reboot to a 100% clean Qubes OS state each time. Scales to many client computers at once.

RAM-based Qubes OS over PXE Network Boot is very useful for:

Interesting initial conversations and a general Qubes OS PXE installer implementation in the general topic thread mentioned above.