noun
promptness; immediacy; timeliness
Refers to the quality of being immediate or without delay; often used in contexts like communication, response, or service.
このシステムの即時性が求められている。
The immediacy of this system is required.
情報の即時性が重要だ。
The timeliness of information is important.
迅速 means 'quick' or 'rapid' and often describes speed of action, whereas 即時性 emphasizes the absence of delay or real-time nature.
Compound of 即時 (immediate) + 性 (quality, -ness).