Abstract
SaaS is a software distribution model in which customers can receive their special types of software application services from the SaaS provider via the Internet, the specified software can be ordered according to customers demand. SOA is a valid architecture pattern to provide integrated systems, applications and processes through the linking of services. With the help of SaaS model, distributed networked software services can be seamlessly integrated and deliver on-demand applications to customers. However, the benefit of SaaS can only be fully exploited if they leverage the SOA strategic framework technology. This paper does researches about recent SaaS, SOA and web services and proposes a new model to show how to combine SaaS with SOA. This combination makes it possible to efficiently develop loosely coupled SOA-based SaaS application. Moreover, in reverse, SOA can be enriched by this convergence.
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