Mttr

Mttr

MTTR stands for Mean Time To Repair (or sometimes Mean Time To Resolve) and is a measure of how long it takes, on average, to fix an issue once it’s detected. You calculate it by adding up the total time spent resolving a set of incidents and dividing by the number of incidents. The measurement usually covers detection, diagnosis, repair, and validation steps, so it reflects the full time users may be affected. Teams use MTTR to track operational performance, set targets, and judge whether changes actually speed up recovery. Lower MTTR means systems get back online faster and customers experience less disruption, which can reduce costs and reputational damage. However, MTTR is just one metric; it should be used with others like time to detect and frequency of failures to get a complete picture. Improving MTTR might involve better monitoring, clearer runbooks, stronger automation, or more effective on-call practices. It matters because shorter recovery times increase reliability and give teams a measurable way to show progress in incident response. Finally, MTTR must be interpreted in context, since very short fixes for trivial problems don’t mean the overall system is healthy.