MTTR stands for Mean Time To Recovery. It is a key performance indicator (KPI) used to measure the average time it takes to restore a service or system to normal operation after a failure or incident occurs. MTTR is an important metric in incident management and is used to assess the efficiency of an organization’s response and resolution processes.

The formula to calculate MTTR is:

MTTR = Total Downtime / Number of Incidents

Where:

• Total Downtime: The cumulative duration of time during which a service or system was unavailable or degraded due to incidents.
• Number of Incidents: The total number of incidents that occurred during a specific period.

For example, if a service experiences three incidents in a month, with respective downtime durations of 2 hours, 3 hours, and 4 hours, the total downtime would be 2 + 3 + 4 = 9 hours. If we divide this total downtime by the number of incidents (3), we would get an MTTR of 3 hours.

A lower MTTR indicates that incidents are being resolved quickly, minimizing the impact on users and the business. Organizations strive to continuously reduce their MTTR by improving incident detection, response, and resolution processes, implementing automation, and investing in proactive monitoring and preventive measures. By reducing MTTR, organizations can improve service reliability, minimize downtime, and enhance overall customer satisfaction.