In case you are talking about automated upgrades between releases, there are some ideas for that here: https://wiki.debian.org/AutomatedUpgrade https://wiki.de

In case you are talking about automated upgrades between releases, there are some ideas for that here: https://wiki.debian.org/AutomatedUpgrade https://wiki.debian.org/AutomatedUpgrade It is feasible to do if you prepare ahead of time, and you can even do automated offline upgrades with apt-offline and some scripting.