Abstract
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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-15 |
| Number of pages | 15 |
| Journal | Science China Information Sciences |
| Volume | 57 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2014 |
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Keywords
- customization
- multi-tenancy architecture
- redundancy and recovery
- SaaS architecture
- scalability
- software-as-a-service
ASJC Scopus subject areas
- Computer Science(all)
Cite this
Software-as-a-service (SaaS) : Perspectives and challenges. / Tsai, WeiTek T.; Bai, XiaoYing Y.; Huang, Yu.
In: Science China Information Sciences, Vol. 57, No. 5, 2014, p. 1-15.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Software-as-a-service (SaaS)
T2 - Perspectives and challenges
AU - Tsai, WeiTek T.
AU - Bai, XiaoYing Y.
AU - Huang, Yu
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
KW - customization
KW - multi-tenancy architecture
KW - redundancy and recovery
KW - SaaS architecture
KW - scalability
KW - software-as-a-service
UR - http://www.scopus.com/inward/record.url?scp=84895778322&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84895778322&partnerID=8YFLogxK
U2 - 10.1007/s11432-013-5050-z
DO - 10.1007/s11432-013-5050-z
M3 - Article
AN - SCOPUS:84895778322
VL - 57
SP - 1
EP - 15
JO - Science China Information Sciences
JF - Science China Information Sciences
SN - 1674-733X
IS - 5
ER -