PS.
99.978% availability translates as a downtime of ~ 2 hours/year total. Not bad! But it's when things break that we realize how performant and reliable they actually are.
I'm consistently amazed how well Google and Facebook are at staying up. They're two services that I don't think I've really experienced a broad outage. Of course with Facebook's data designs, there's sometimes quirkiness as a result, but it's rarely completely off for me.
Google, I think I've only really noticed it offline once in the past 10 years or so. Not complaining at all.
> [Google's infrastructure] delivers Gmail and other services to hundreds of millions of users with 99.978% availability and no scheduled downtime.
[1] https://support.google.com/googlecloud/answer/6056635?hl=en
PS. 99.978% availability translates as a downtime of ~ 2 hours/year total. Not bad! But it's when things break that we realize how performant and reliable they actually are.
Edits: various typos.