Mean Time To Acknowledge
How fast your team responds when something breaks. The clock starts when an alert fires and stops when someone takes ownership.
How fast your team responds when something breaks. The clock starts when an alert fires and stops when someone takes ownership.
The "Waking Up" Metric
MTTA (Mean Time To Acknowledge) measures how long it takes for a human to say "I am looking at this." It is purely a measure of responsiveness.
Why It Matters
If your system crashes at 3:00 AM and your engineer sleeps until 8:00 AM, your MTTA is 5 hours. That is 5 hours of downtime where no one was even trying to fix it. Reducing MTTA is the "quickest win" for improving overall Availability.
MTTA vs. MTTD vs. MTTR
- MTTD: Time to detect the fire.
- MTTA: Time to pick up the fire extinguisher.
- MTTR: Time to put out the fire.
ExThe Sleeping Engineer
“An alert fired at 2 AM. The on-call engineer had their phone on "Do Not Disturb".”
Why MTTA Matters
MTTA measures your team's responsiveness. Fast acknowledgment means faster resolution and less customer impact.
Top performing teams acknowledge incidents within 5 minutes, regardless of time zone or day of week.