SaaS virtualization method and its application

In this paper we propose a method and its application to construct the information system for a company that needs the cloud computing services. The points of this method are coupling the advantage of cloud computing service provided by the telecom operators and SaaS vendors. Specifically, we discuss about "SaaS virtualization method". This method is combine together the SaaS base service system and on-premise backbone system with VPN as a closed area network. By introducing this method, it is possible to combine virtually the SaaS base service system that was assigned to each client company existing externally and the on-premise backbone system. That is, the external SaaS base service system and the internal backbone system are unified by virtualization. In addition, we think the "SaaS virtualization method" may have a possibility of becoming a Business to Business to X (BtoBtoX) model to address the needs of client company through combining the core competency of each of multiple cloud service companies as one way of combining technology and business.