It feels like they reinvented the wheel on a lot of things (especially on the monitoring side). I also wish there was some more detail about the caching/endpoint side of things. We rely heavily on Akamai's services for their edge servers, caching, and site acceleration. I don't see anything like that here, but maybe they're just not mentioning it?
We only implemented the dashboard (getting data from all kinds of source) on monitoring side, we relied on: logtash, graphite, elasticsearch...
The architecture up from what was described is almost purely to provide caching capabilities, aka bunch of edge servers caching content to final users.
