Roaster Tech

I've been looking around for a roaster, and I have a couple things I'd like to have. One, being able to roast to about 1 pound, and second, I'd like to be able to use artisan or other software to monitor and adjust my roasts.

But this seems to be a unicorn unless you fork over $$$$.

However, I've noticed that many commercial roasters are surprisingly analog. They seem to be pretty simple. Heat, stir, cool. Are the people using these roasters going by feel and experience? Or am I missing something?

I imagine that roasting large batches at a time can easily end up in disaster, especially with bean variations, unless there's ways the roasting process is automated in some way.

Maybe I'm over thinking it. But I'm just curious. It's pretty fascinating to me, really.