I still don't see why the expert has to be remote, or why an integrated computer can't do the optimization. Or why it needs to be fiddled with at any significant frequency.
> I still don't see why the expert has to be remote
Yup, they're done with it, all right. "It" being all the food being cooled for sale this week. Done.
They do not need engineers at every location to turn every knob. They need to define procedures and limits, and the ability to call the engineers when things go out of those limits. Even putting only remote MONITORING online, but requiring the local person to check and turn the knobs/press the buttons. That also adds an extra set of real eyes on the situation — when the engineer calls the local dept manager to start the defrost because the hacked line says it is now time to defrost, the local manager —with eyes on the freezer— can tell him "NO!" because this was not on their schedule and the freezers are all stocked, not emptied for the defrost.
Instead, the defrost cycle just turned on in the middle of the night, and neither the now-remote engineers nor the local managers knew until it was too late. ——Again.
Security is always a trade-off against convenience. And the idiot human managers almost always all pick convenience because their managers incentivize profit, and security costs and convenience appears to save up front. They nevermind the later costs because they'll already be promoted up or job-hopped out.
These fridges may need more complex control for a variety of reasons, but that doesn't mean they have to be connected to _the internet_. To a local network for control, sure.
Put your security measures into the network itself, but I really do feel fridges are another thing which do not need to be IoT devices.
Because then he can get paid more.
Complicated things don’t have to be connected to the internet. Most environment control systems in small buildings (typically with hundreds of sensors and actuators) aren’t. There is smart, deterministic, software involved but most of the time, no cloud.
People always say stuff like this, but it never tracks for me. If you’re a chain with 1,000 stores, $500,000 is barely a blip on your budget sheet in exactly the same way that $500 is barely a blip on the budget of a single store.
Plus there’s no way this remote management stuff doesn’t cost at least $500/store in operating costs.
Going by the number of companies that still can't grasp having to pay for ongoing maintenance for and IoT system, even with CRA and NIS2, some still selling stuff running on 12+ year old software, I wouldn't expect them to pay much for this service or to even properly maintain it.
At $500/store/year times 1,000 stores, you can pay an entire team of experts for a year to come up with a way to save that money, and come out ahead. That team's manager can then go to their boss and say, look, I saved the company half a million dollars a year, and they'll get a nice bonus from it.