[目的 /意义]云环境下,很多行业和领域选择将服务器托管到云中,图书馆也不例外。目前,国外的很多图书馆已经开始应用Iaa S,并取得了一定的效果。通过分析国外图书馆应用Iaa S的模式和经验,为我国图书馆应用Iaa S提供借鉴。[方法 /过程]综合应用网站调研法和案例分析法,对应用Iaa S的国外图书馆进行分析,探讨其在服务功能、应用原因、实施过程、应用经验等方面的一系列问题。[结果 /结论]国外图书馆行业已经较为广泛地采用了Iaa S。我国图书馆应用Iaa S,一要准确分析本馆是否具备应用条件,二要选择合适的服务商,三要建立本馆化的应用流程,四要主动发现和有效应对实施过程中的问题。 [Purpose / Significance] In a cloud environment, many industries and areas choose to host servers in the cloud, and libraries are no exception. At present, many foreign libraries have begun to use Iaa S, and achieved some results. By analyzing the patterns and experiences of Iaa S applied in foreign libraries, this paper provides reference for the application of Iaa S in Chinese libraries. [Method / Process] This article analyzes the foreign libraries applying IaaS by comprehensively using the website research method and case analysis method, and discusses a series of problems in service function, application reason, implementation process and application experience. [Results / Conclusion] Iaa S has been adopted more extensively by the foreign library industry. Our library application Iaa S, an accurate analysis of the museum has the application conditions, the second to select the appropriate service providers, three to establish the application of the process of localization, four to take the initiative to discover and effectively deal with the implementation process of the problem.