on-demand computing

基本解释

On-demand computing instances with several OS options can be ran in a very short time like 5 minutes.
按照計算實例需求通過幾個OS選項，便可以在很短的時間內例如5分鍾就可以將應用運行起來。
Actually two new concepts are already beginning to be implemented: Grid computing and on-demand computing.
實際上，兩種新的概唸已經開始實現了：網格計算（Grid Computing）和按需計算（On-demand Computing）。
This, in turn, makes obvious the need for the concept of on-demand computing, which might be implemented on any configuration, from a simple cluster of servers to a network of 1024-node SP2s.
而這又明顯地需要按需計算的概唸（on-demand computing），按需計算可能是在任何配置下實現的，從簡單的服務器集群到有1024個節點的 SP2 網絡。

As more enterprises shut down their in-house data centers and turn to on-demand storage and computing services delivered via the Internet, their storage needs become more variable and less predictable.
FORBES: HP Wins 3Par At $33, Beats Dell
The company hopes to build demand by pitching them as cost-saving "print on demand" machines that work best when connected to HP computing hardware.
FORBES: High-Speed Selling
Arguably more than any other government agencies, their missions require a fabric of utility computing that scales on demand and enables self discovery and self-service access to secure, timely and relevant information in support of mission: individual or shared.
FORBES: Implementation of Cloud Computing Solutions in Federal Agencies: Part 4 - Cloud Computing for Defense and Intelligence