Azure IoT Certification Service

Learn about the new embedded server offer, Windows Server IoT 2019. Part of the Windows IoT solution, Server IoT securely handles large edge workloads, providing a gateway for information to the cloud.
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I'm trying to understand the basics, in order to start... but please, have you got a video really ok to start? I think that you need a good storyteller! Doesn't seems to be an introduction!
The "25 decades" is at the 3:29!