云计算被认为是新型的IT资源交付商业模式。面对新型的商业模式,服务的价格很大程度上决定了该服务吸引客户的程度。文章采用有针对性的抽样策略来收集数据,选取Google、Amazon和Microsoft等3家典型的云服务提供商,采用定性描述和统计分析相结合的方法,发现云服务提供商在制定价格策略时,是将云服务的定价模型与服务内容结合起来联合定价的。也就是说,同样的服务内容,但如果采用的定价模型不同,其价格也会有所不同。根据即用即付费(pay-per-use)和预订(subscription)这两种定价模型及其四种形式:每单位定价、分级定价、预订定价和动态定价,以服务内容为依据,进一步分析IaaS、PaaS和SaaS三种基本的云服务模型的定价策略。
Cloud Computing is known as a new IT resources delivering business model.The new service which can attract customers is largely dependent on its price.How do the Cloud Service Providers price their services prices? This paper targets three cloud service samplings such as Google,Amazon and Microsoft to collect data.It is found that the prices is not only determined by the service itself but also determined by the pricing models.In another words,different pricing model,different price in the same service.The two pricing models are the pay-per-use pricing model and the subscription pricing model.Pricing models for different cloud services have taken one of four forms: tiered pricing,per-unit pricing,subscription-based pricing,and dynamic pricing.The paper identifies which forms do the cloud service models(IaaS,PaaS and SaaS) take respectively.