Fair point, I didn’t really consider hassio, I guess I think that most core automations like lighting that use e.g. Hue or Z-Wave, these require you to set something up locally.
Hmmm - disagree - but it depends what you mean by “very efficient”. Of course it’s nothing like the Pi, and probably more than a NUC, but original poster brought up the subject of reliability, he didn’t mention power requirements other than that he uses a battery backup - so that’s definitely a plus for dual redundant power supplies - or at least some kind of Pi clustering for example.
As for me, my home server runs multiple VMs and uses only about 110W of power. Less than my old PC!
(But yes, possibly more than a NUC and definitely more than a Pi)
It’s a trade-off - you must spend more for increased reliability. Same is true of burgers…