A comprehensive study on cloud service brokering architecture

In distributed computing, the term cloud is really revolutionizing the technology. Cloud computing is ruling the present IT industry. This advent of the cloud attracts the researchers to work in this area. Research on the cloud architecture needs to realize the necessity of CLOUD SERVICE BROKER (CSB). In the Multi Cloud environment, the requester gets services from different providers. But, the problem is whether the Requester satisfies with the service provided by the Provider or not. The Requester can't predict the level of obeying the SLAs by Providers. Here there is a necessity of third party who acts as a mediator between Cloud Service Requester and Cloud Service Provider. We call this third party as Cloud Service Broker (CSB). In this review, we exploit the motivation towards Multi Cloud, necessity of cloud service broker, the different cloud service broker architectures, Quality of Service parameters, negotiation in Service Level Agreements (SLAs) and their pricing schemes.