On-Call - CI/CD Glossary Definition
On-call is the rotation in which an engineer is responsible for responding to production alerts and incidents during a shift, including outside business hours. Tools like PagerDuty and Opsgenie route pages to the current on-call.
Healthy on-call
Sustainable rotations balance load across the team, page only on actionable alerts, and feed recurring pages back into fixes so the same problem does not wake someone twice.