SEV1

ops culture

The highest incident severity: the service is down, customers feel it, and everything else can wait.

Declaring a SEV1 is a deliberate act - it summons the war room, wakes the escalation chain, and starts the clock on communications. Most organizations run SEV1 through SEV4; arguing about the number mid-incident is a smell of its own.

Also known as: sev one, severity 1, P1

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