A Multi-tenant Software as a Service Model for Large Organization

software as a service (SaaS) has been adopted by more and more small and medium-sized businesses with the spread of relevant ideas in recent years. But its application is still limited in large organizations. Sophisticated organizational structure, various customized sub-organization services and complex cross-organizational interaction are un-ignored challenges for its success. Based on the analysis of organizational structure and business characters for large organization, the paper presents a novel multi-tenant SaaS model. The model fully absorbs strongpoints from traditional one-tenant software architecture, common SaaS data model and SOA based distributed architecture, and owns stronger strength in solving challenges occurred in SaaS project for large organization. A case is given to clearly show the model's advantages beyond the other three. A software implementation for the case and related discussion is presented later.