I'm probably the wrong IOT guy to answer, since my setup looks _nothing_ like yours, for reason of exactly what you're saying. (clusterfuck of managing discrete

I'm probably the wrong IOT guy to answer, since my setup looks _nothing_ like yours, for reason of exactly what you're saying. (clusterfuck of managing discrete/heterogenous devices) I've ended up leveraging almost entirely RPI's/arduinos for just about everything, with some amount of homebrew fire-waiting-to-happen mess of soldering on top. this lets me manage all the pis with a single ansible deployment. I have my own on-prem "discount IFTTT" as well, but if lacking that, some service to that sort would also be critical for message based orchestration. (functionaly wise; I have the pis managing garage door, plant growing automation, cameras, media devices; halfway through getting some lights set up on one as well.)