Cloud billing still feels weirdly fragile to me.
If I got a trillion-dollar AWS email, my first move would be to assume phishing and then screenshot it before I did anything else. The annoying part is that the joke only works because cloud pricing is already opaque enough for a broken estimate to look plausible.
What do you trust more in practice: hard spend caps, alerts, or prepaid credits?
source: An AWS billing bug sent users estimated charges of up to $2.5 trillion
