On-Call
Definition
On-call duty defines the response to urgent incidents outside regular hours.
An organized responsibility to respond to critical technical incidents outside regular hours.
Simply explained
It is previously agreed who is reachable and responds to an important technical problem.
Why it matters in practice
Helps develop and operate digital systems robustly, securely, and maintainably.
Example from business
A rotating person responds to a few clearly prioritized production alerts.
Limits and pitfalls
- Accepting unclear escalation, too many alerts, and lack of recovery time.
Origin & history
On-call practices have been formalized with highly available online services and Site Reliability Engineering.
Use in mid-sized companies
- Possible example: A rotating person responds to a few clearly prioritized production alerts.
Frequently asked questions
What does on-call duty mean?
An organized responsibility to respond to critical technical incidents outside regular hours.
Which mistakes should be avoided?
Accepting unclear escalation, too many alerts, and lack of recovery time.
Sources
Source checked on 10.10.2026. Editorial application examples are hypothetical; no proof of real customer results.
Editorially reviewed on: