Many times I've been asked by this question, when approaching a speech about IoT, or modern Embedded system technology. And, I admit, it's not a weird question.
In general Embedded system in market like Automation, Industry, Controls need to have a strict knowledge of what (and when)thing happen, in many case bringing responsibilities like human life or vital production continuity processes.
Let's try to answer to this question getting a conversation with the attendee experience and knowledge.