Those who fail to learn from history are doomed to repeat it. When things go wrong, and our services are impacted, we need to tell the story of our failures so that we can grow and learn as team. Postmortems offer us an opportunity to share this knowledge, so that we can build on our successes and avoid repeating our mistakes in the future. In this session we will discuss how Datadog runs our internal postmortems from data collection to building timelines to the blameless review. Attendees will leave with a framework they can apply right away to make postmortems more impactful in their own organizations.