Security-as-a-service (SaaS) is an outsourcing model for security management in cloud computing environment. The researcher focused on the some of the significant research issues in cloud computing typically, Security as a Service involves applications on AMAZON online shopping portal and its controlling mechanism in cloud computing environment. Outsourcing of administrative tasks, such as log management, to save time and money and allow an organization to devote more time to its core competencies. A Web interface that allows in-house administration of some tasks as well as a view of the security environment and on-going activities. The researcher proposed a model as applied to information security type services and does not require on-premises hardware, avoiding substantial capital outlays. These security services often include authentication, anti-virus, anti-malware/spyware, intrusion detection, and Penetration testing and security event management, among others.