It is a separate instance from our internal one. We have a cron job that automatically copies the internal Grafana dashboards to the public one, so you still see exactly what we see.

We used to use Federation, but now we just have the public server scrape the same targets as our private one.

I'm adding a caching proxy (https://github.com/Comcast/trickster) to the public server now to improve performance. :-)