A reliable e-service framework based on cloud computing concepts for Saas applications

The rapid growth of e-services between enterprises and users is one of the most considerable topics for researchers and planners. Despite the rapid growth, many limitations and considerations have appeared especially in matters of safety and efficiency. According to these considerations, this paper offers an e-service framework based on cloud computing concepts for Software-as-a-Service (SaaS) applications and by using these concepts, the level of scalability, availability, agility and collaboration of e-services will be improved. The proposed model has been designed by introducing multi-clouds and three main agents to increase responsiveness, efficiency, security, and access control. Data source, security, and privacy agents have been presented in this model to decrease the dependency of encryption keys from main data storages and increase the reliability of using cloud computing as an emerging technology. In addition, anatomy of data packets in the proposed model has been presented and investigated for efficient communication between cloud servers and agents. Finally, the theoretical analysis of using multi-clouds and agents shows that the suggested framework could be practical to eliminate defined limitations in e-services.