# Incident

> An unplanned interruption or degradation of a service that needs a response.

URL: https://pagerless.dev/glossary/incident
Updated: 2026-10-22

## In Pagerless

Called a problem: a group of related signals with a level, a diagnosis and a fix.

## Related terms

- [Postmortem](https://pagerless.dev/glossary/postmortem): A written review after an incident: what happened, the impact, the cause, and what will change so it doesn't recur
- [MTTR](https://pagerless.dev/glossary/mttr): Mean time to recovery (or restore, or resolve): the average time from an incident starting to service being restored