You can engineer for any number of nines and still have massive outages.

What I like to call "nine fives".

With that logic, you can do anything and it’s A-OK if nothing you do succeeds.

That's not the point. 9s and SLAs are contractural obligations, not laws of physics that cannot be broken.

I saw many systems engineered for a lot of 9s be down hard for much longer than 9s promised, most often due to perfect storm of issues.

9s are great, and communicate pretty well what system was designed for, but they are in no way hard guarantee that the system will be up.

Can confirm. This is how the world works smh.

I mean...you tried. What are you supposed to do if you fail, quit and never come back? That's terrible logic too.

OKTA SLAs and support terms specifically exclude AWS outages, so why would they?

Ahh, but how many of the nines need to go on which side of the decimal point?

They are all on the same side, obviously. But you have a point, nobody ever said there were only nines there.

Probably this isn't their only outage of the decade, but if so, 45 minutes out of ten years actually is five nines.