Chapter 5 – Test Management
Mean Time to Recover (MTTR) – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The average time required to restore a system to full operation after a failure.
In simple words
On average, how fast we get back up after breaking.
Exam tip
A DORA metric; MTTR trending down is a healthy sign.
Related terms
- Mean Time to Detect (MTTD)How long, on average, a bug lives in the system before someone notices it.
- Mean Time Between Failures (MTBF)On average, how long the system runs between failures.
- DORA MetricsDeployment frequency, lead time, change failure rate, mean time to restore — the four DevOps performance KPIs.
Practice this term in the ISTQB Mock Test
40 CTFL v4.0 questions, 60-minute timer, instant scoring and chapter-wise breakdown.
Practice in Mock Test