SLA, Error Budget, Uptime: Where Do Maintenance Windows Fit?
When it comes to service reliability, maintenance windows are a frequent source of ambiguity. Whether you’re defining uptime, setting SLOs, or communicating with customers, it’s essential to be explicit about how scheduled (and unscheduled) maintenance is handled. Here’s a deeper dive with actionable recommendations for SREs, engineering managers, and anyone responsible for reliability targets.