理学 云计算 释 software as a service 软件即服务 一种云交付模型。云交付模型是指云提供者提供的具体的、事先打包好的信息技术（informaiton technology，IT）资源组合。软件即服务即云提供者把软件程序作为共享的云服务，作为“产品”或者通用的工具来对外提供服务。这里的软件无需用户安装，仅需通过一个网页浏览器或者精简的客户端来访问。
软件工程 释文 software as a service, SaaS 软件即服务
- axiom of ordered pair
- axiom of pairing
- axiom of parallelism
- axiom of parallels
- axiom of planes
- axiom of position
- axiom of power set
- axiom of power-set
- axiom of projective determinacy
- axiom of projective determinacy (PD)
- axiom of rational behavior
- axiom of reducibility
- axiom of regularity
- axiom of regularity; axiom of foundation
- axiom of replacement
- axiom of restriction
- axiom of separation
- axiom of subsets
- axiom of substitution
- axiom of sum-set
- axiom of syllogism
- axiom of symmetry
- axiom of the empty set
- axiom of the power set
- axiom of the sum set