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Ask most SREs how many incidents they’d have to respond to in a perfect world, and their answer would probably be “zero.” After all, making software and infrastructure so reliable that incidents never occur is the dream that SREs are theoretically chasing. Reducing actual incidents by as much as possible is a noble goal. However, it’s important to recognize that incidents aren’t an SRE’s number one enemy.
There are a handful of providers that large parts of the internet rely on: Google, AWS, Fastly, Cloudflare. While these providers can boast five or even six nines of availability, they’re not perfect and - like everyone - they occasionally go down.