instantaneously

Adverb

not-comparable

Without any delay; in an instantaneous manner.

Japanese Meaning

瞬時に / 即座に / 一瞬で

When the alarm sounded, the system instantaneously switched to backup power to keep the servers running.

警報が鳴ると、そのシステムはサーバーを稼働させ続けるために即座に予備電源へ切り替わった。

Sense（1）

Without any delay; in an instantaneous manner.