Five nines of availability calculates to 5 minutes, you can calculate up and down from there. If you don't want to do the conversion from percentage to minutes there's lots of calculators like this one: https://uptime.is/five-nines
I wasn't assuming what status pages are used for, I was speaking to my experience working in reliability engineering. I can't speak to Amazons practices as I've not worked there, but when I've seen this happen it's because we struggled to identify customer impact. The systems you're talking about are vaste and a single or even subset of applications reporting errors doesn't mean there's going to be customer impact. That's why I mentioned it usually takes a human that knows that system and it's upstreams to know if there'll be customer impact from a particular error.
I'd encourage you to read the wording of an SLA in a contract. They're often very specific in terms of time and the features they cover. Increased error rates tells me you'll probably run into retry scenarios, which depending on your contract may not actually affect an SLA. Error rates are generally an SLO or an SLI, which are not contractually actionable.
I wasn't assuming what status pages are used for, I was speaking to my experience working in reliability engineering. I can't speak to Amazons practices as I've not worked there, but when I've seen this happen it's because we struggled to identify customer impact. The systems you're talking about are vaste and a single or even subset of applications reporting errors doesn't mean there's going to be customer impact. That's why I mentioned it usually takes a human that knows that system and it's upstreams to know if there'll be customer impact from a particular error.
I'd encourage you to read the wording of an SLA in a contract. They're often very specific in terms of time and the features they cover. Increased error rates tells me you'll probably run into retry scenarios, which depending on your contract may not actually affect an SLA. Error rates are generally an SLO or an SLI, which are not contractually actionable.