[aq9]

Close, I think.

Context: I looked into uptime monitors quite deeply about 10 years ago when I thought about doing a SaaS.

Implementing a good uptime monitoring system is actually more complex than you would think from a technical perspective (dealing with network splits which could be the result of your network or the target endpoint's network, so you need to triangulate continuously between multiple network sensors).

Actually, something like pagerduty is even simpler from a technical perspective; but as a business, is probably a different story.