expression
A set phrase used to express urgency or a request for prompt action. Often used in business or polite requests.
できるだけ早くご返事ください。
Please reply as soon as possible.
できるだけ早く終わらせます。
I'll finish it as soon as possible.
A phrase composed of できるだけ (as much as possible) + 早く (early/quickly). The expression is transparent and modern.