Building an IOT Platform: Centralized vs. Decentralized Models

I found this an interesting view... but I think there's another model that's a combination. The author assumes all devices will talk to the cloud-based service, although in the "Decentralized" model the devices may talk amongst each other and THEN out to the cloud.

However, there could also be model where all the IoT devices communicate with a local hub within a building and then communicate back to the cloud through that local hub. So the model is "decentralized" in that it does not have reliance on a central hub... but "centralized" within the local area. Perhaps this is a "Distributed Hub" model or something like that.