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PROFESSIONAL-CLOUD-DEVOPS-ENGINEER · Question #67

Your team is writing a postmortem after an incident on your external facing application. Your team wants to improve the postmortem policy to include triggers that indicate whether an incident…

The correct answer is B. Data is lost due to an incident. E. The CD pipeline detects an issue and rolls back a problematic release. Based on SRE practices, critical incidents like data loss or significant deployment issues requiring a rollback should trigger a postmortem.

Submitted by eva_at· Apr 18, 2026Applying site reliability engineering principles to a service

Question

Your team is writing a postmortem after an incident on your external facing application. Your team wants to improve the postmortem policy to include triggers that indicate whether an incident requires a postmortem. Based on Site Reliability Engineering (SRE) practices, what triggers should be defined in the postmortem policy? (Choose two.)

Options

  • AAn external stakeholder asks for a postmortem
  • BData is lost due to an incident.
  • CAn internal stakeholder requests a postmortem.
  • DThe monitoring system detects that one of the instances for your application has failed.
  • EThe CD pipeline detects an issue and rolls back a problematic release

How the community answered

(47 responses)
  • A
    4% (2)
  • B
    74% (35)
  • C
    15% (7)
  • D
    6% (3)

Why each option

Based on SRE practices, critical incidents like data loss or significant deployment issues requiring a rollback should trigger a postmortem.

AAn external stakeholder asks for a postmortem

While stakeholder requests can prompt communication, SRE postmortem triggers are fundamentally tied to the severity and impact of the incident itself, not just an external request.

BData is lost due to an incident.Correct

Data loss is a severe incident with significant impact, and SRE best practices mandate a postmortem to understand the root cause, prevent recurrence, and learn from the event.

CAn internal stakeholder requests a postmortem.

While stakeholder requests can prompt communication, SRE postmortem triggers are fundamentally tied to the severity and impact of the incident itself, not just an external request.

DThe monitoring system detects that one of the instances for your application has failed.

An instance failure is a symptom; a postmortem trigger should be based on the user-facing impact or the broader incident it causes, not just a component failure that might be automatically remediated without significant impact.

EThe CD pipeline detects an issue and rolls back a problematic releaseCorrect

A rollback of a problematic release signifies a deployment incident where a flawed change reached a production-like environment, requiring SRE teams to analyze the failure, improve testing, and refine the release process.

Concept tested: SRE postmortem triggers

Source: https://sre.google/sre-book/postmortem-culture/

Topics

#Postmortem policy#Incident management#SRE practices#Reliability

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