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	Software-as-a-service(SaaS): perspectives and challenges
	TSAI WeiTek ; BAI XiaoYing ; HUANG Yu ; TSAI WeiTek ; BAI XiaoYing ; HUANG Yu
	2016-03-30 ; 2016-03-30
关键词	software-as-a-service SaaS architecture customization multi-tenancy architecture redundancy and recovery scalability TP393.09
其他题名	Software-as-a-service(SaaS): perspectives and challenges
中文摘要	Software-as-a-service(SaaS)has received significant attention recently as one of three principal components of cloud computing,and it often deals with applications that run on top of a platform-as-a-service(PaaS)that in turn runs on top of infrastructure-as-a-service(IaaS).This paper provides an overview of SaaS including its architecture and major technical issues such as customization,multi-tenancy architecture,redundancy and recovery mechanisms,and scalability.Specifically,a SaaS system can have architecture relating to a database-oriented approach,middleware-oriented approach,service-oriented approach,or PaaS-oriented approach.Various SaaS customization strategies can be used from light customization with manual coding to heavy customization where the SaaS system and its underlying PaaS systems are customized together.Multi-tenancy architecture is an important feature of a SaaS and various trade-offs including security isolation,performance,and engineering effort need to be considered.It is important for a SaaS system to have multi-level redundancy and recovery mechanisms,and the SaaS system needs to coordinate these with the underlying PaaS system.Finally,SaaS scalability mechanisms include a multi-level architecture with load balancers,automated data migration,and software design strategies.; Software-as-a-service(SaaS) has received significant attention recently as one of three principal components of cloud computing, and it often deals with applications that run on top of a platform-as-a-service(PaaS) that in turn runs on top of infrastructure-as-a-service(IaaS). This paper provides an overview of SaaS including its architecture and major technical issues such as customization, multi-tenancy architecture, redundancy and recovery mechanisms, and scalability. Specifically, a SaaS system can have architecture relating to a database-oriented approach, middleware-oriented approach, service-oriented approach, or PaaS-oriented approach. Various SaaS customization strategies can be used from light customization with manual coding to heavy customization where the SaaS system and its underlying PaaS systems are customized together. Multi-tenancy architecture is an important feature of a SaaS and various trade-offs including security isolation, performance, and engineering effort need to be considered. It is important for a SaaS system to have multi-level redundancy and recovery mechanisms, and the SaaS system needs to coordinate these with the underlying PaaS system. Finally, SaaS scalability mechanisms include a multi-level architecture with load balancers, automated data migration, and software design strategies.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/146863]
专题	清华大学
推荐引用方式 GB/T 7714	TSAI WeiTek,BAI XiaoYing,HUANG Yu,et al. Software-as-a-service(SaaS): perspectives and challenges[J],2016, 2016.
APA	TSAI WeiTek,BAI XiaoYing,HUANG Yu,TSAI WeiTek,BAI XiaoYing,&HUANG Yu.(2016).Software-as-a-service(SaaS): perspectives and challenges..
MLA	TSAI WeiTek,et al."Software-as-a-service(SaaS): perspectives and challenges".(2016).

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