Thanx for your comment. Yes, it is the start, only an introduction as mentioned by croes. I will ad a lot about the stack in the next weeks.

> Excuse me, but if placing that link was the actual intention of the post, why not just link to the service itself?

No, that was not the intention of the post. But the colocation is an important part, because Prof. Simon synchronizes the data during traveling with the Pi's located in this edge data centers. I will also write about this part.