So instead of connecting chips via a circuit board, connect chips directly. It sounds like a good idea, but I think the conclusion, that it would enable every IoT manufacturer to customize their chip configurations, is wrong. It would be expensive due to economies of scale, and I don't see why IoT devices can't use the plain old circuit board. Do IoT devices need to be super small and super power efficient? However, I do see that it might benefit smartphone manufacturers, where size and power consumption matter. However, it is likely that suppliers would offer chip configurations for narrower use cases.