The link I'm talking about is literally the hyperlink in the text "nothing more than a simple link". It leads to a file titled "speed-2020-07-21-16-10-44-map.html" which I assume is meant to be the output.
The mapping tool outputs a single html file, that relies on stuff from other servers. But all they have to deal with is the single file (if you view source, the exercise data is stored in the file).
It's really not an interesting discussion. Maybe they could have used a better description, but it's not confusing or particularly misleading.
