A Feature Tree and Dynamic QoS based Service Integration and Customization Model for Multi-tenant SaaS Application

Typically, a service platform of SaaS provides a specific domain of application services for tenants having the same or similar business needs, such as enterprise resource planning, customer relationship management or warehouse management, etc. Tenants customize and use application services in the SaaS platform according to their own business requirements and quality of service (QoS), and to achieve the targets of low-cost, on-demand, and rapid deployment. To meet the requirements of multi-tenant SaaS application customization, we analyze the related concepts and issues involved in tenants' application customization from service integration perspective and QoS perspective. Then we proposed a feature tree and dynamic QoS based model for multi-tenant SaaS application. The feature tree is used to decompose the fuzzy tenants' requirements and construction integrate rules to gather scattered services on SaaS platform. Dynamic QoS supports tenants to customize their applications' functions and service quality. Finally, to demonstrate the effectiveness of the model, this paper run a customization process of SaaS application on the case of warehouse management system in the field of logistics distribution.