initial response; first response
Refers to the immediate actions taken when an incident or problem first occurs, often used in emergency, security, or IT contexts.
The initial response when an incident occurs prevents the damage from spreading.
In a security incident, the speed of the initial response is crucial.
Similar meaning, but 初期対応 is more general and can refer to early-stage handling over a longer period, while 初動対処 emphasizes the very first actions taken.
Compound of 初動 (initial action) and 対処 (dealing with, coping).