Earlier quoted context omitted.
I learned another nice trick from GCP the other day; Stackdriver log ingestion was down, at least for me and a number of people on Twitter, and they simply put a yellow warning at the top of status.cloud.google.com while fixing it instead of making an official incident. Magic, 100% uptime!
Saucelabs are kings of the "100% outage for 5% of our users = 95% availability" status update. In particular I'd see repeatable problems where they couldn't launch whatever browser X operating system in under 2 minutes (when our tests would time out) and list allocation time as 'elevated' (say, 8s average vs their normal of 3s). If you start believing your own statistics you get into almost as much trouble as believi…
What's a fair way of producing a single number though?