Seems to be based mostly on Fedora by reading the Readme.
I would like to know if it does use systemd and/or other redhat technologies.
In the readme they mention Qt, does anyone know what DE do they use?
I don’t think it ships with a desktop environment by default; I think they’re just referring to the Qt framework. If it is mentioning a desktop environment - it’s probably LXQt.
I’d wager it uses systemd considering Lennart Poettering works for Microsoft.
I’d wager
Just look it up instead of making wild guesses: https://github.com/microsoft/azurelinux/tree/3.0-dev/SPECS/systemd