Cloud Computing

雲端運算定義:
2009 年 10 月 7 日定案,定義如下:
Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models.


* Cloud service model (SaaS, PaaS, IaaS)
* Cloud deployment model

- Private Cloud,
- Community Cloud,
- Public Cloud, Hybrid Cloud
* Cloud Characteristic:

- On-demand self-service 有需求時自助服務
- Broad network access 普遍網路存取
- Resource pooling 資源共享
- Rapid elasticity 快速彈性佈署
- Measured service 服務量測