I believe the IoT distinction is that the platform reports to a cloud service, where parts of that are implemented as SaaS, if only for SSO and remote managemen

I believe the IoT distinction is that the platform reports to a cloud service, where parts of that are implemented as SaaS, if only for SSO and remote management. I think this is a fairly loose definition though if the underlying device data is still on-prem. Wi-Fi router I would take to mean one of those consumer all-in-one boxes, which is what the UDM fits the description of. I agree that this distinction is unnecessary. When we consider who wrote the article and who it's for, we should expect a bit more granularity than foggy acronyms.