cloud 云计算学习

定义

colud computing is a model for enabling convenient,

ondemand 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 ofservice provider interzction.

三种服务模式

saas software as a service

paas platform as a service

laas ingrastructure as a service

五个特征：

broad network access

rapid elasticity

measured service

on-demand self-service

resource pooling

四种布署模式

public

private

hybrid

community