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Incidents

Root-cause analysis

Root-cause analysis is structured investigation into why an incident happened.

What is root-cause analysis?

Root-cause analysis describes structured investigation into why an incident happened. In reliability work, the label is useful only when it maps to a measurable check, a clear owner, and a next action when expectations break. Without that operational meaning, the phrase becomes decoration in dashboards and status updates.

Why it matters

Root-cause analysis matters because teams need a precise shared meaning for structured investigation into why an incident happened. Vague language turns incidents into arguments about words instead of fixes.

When everyone uses the same definition, alerts, status updates, and post-incident reviews stay aligned.

How it works

In practice, structured investigation into why an incident happened shows up as a concrete signal you can measure or communicate. Operators define what good looks like, watch for deviations, and record what happened when expectations break.

The useful version of root-cause analysis is operational: it changes who gets notified, what customers see, or which metric a team reviews after an incident.

Practical example

Imagine a team operating around finding a bad migration behind 500s. When observed behavior stops matching the definition of root-cause analysis, the team treats that change as a reliability event with a clear owner and next step.

Common misconception

There is always exactly one root cause

That reading usually collapses distinct ideas into one slogan. Keep root-cause analysis tied to observable behavior so the definition stays useful under pressure.

How Fajita handles this

Prefer clear contributing factors over a single blame story.

Was this definition clear?