[StavrosK]

They usually just host it on a third-party host. It's extremely unlikely that both their systems and the third party will be down at the same time. If only the status page is down but the services are working fine... well, why would you be looking at the status page then?

[waitwaitwhay]

Sure about that? My experience is that large companies host their dashboard in their own environment and that the dashboard will be down when their own infrastructure is. If by large companies, we are talking about >10 000 employees or so.

[StavrosK]

Well, it depends on the company. The companies I've worked with do it the way I've described, but I can definitely see enterprises going all politics and deciding to host the status page themselves, rather than do it correctly.