Quality Based Cloud Service Broker for Optimal Cloud Service Provider Selection

Cloud consumers (CC) are confounded while taking the choice of selecting Cloud service provider (CSP) to accomplish Cloud services. Large number of CSPs are present in the market, which provide diverse cloud administrations viz Platform-as-a-Service PaaS, Infrastructure-as-a-Service IaaS and Software-as-a-Service SaaS. CSPs are conveying their Cloud services to CC in light of Service Level Agreement (SLA). In this archive, every one of the transactions have been obviously characterized, what nature of administration will CSP give and what the consumer should pay have been dispassionately characterized. Unfortunately, SLA is not strictly pursued; quality of service is not accomplished. In several events, availability of administration is not up to the mark, reliability is traded off. Cloud service broker (CSB) is an entity which can resolve all these issues. The problem which we will take up in the present research paper is the selection of Quality based Cloud service provider. This procedure will be accomplished by Cloud service broker. Optimal CSP is one which fulfills all the quality requirements of user. In section – I, we will give an introduction of CSB and its categorizations. In section – II, we will figure out motivation behind the research and contribution made. Section – III, IV and V will discuss Research Methodology, Quality Metrics and present status of CSB for CSPs selection. In next section, Quality Based Cloud Service Broker framework QCSB will be proposed. This framework will not only help CC to select optimal CSP but also rank candidate CSPs according to user preferences mentioned in SLA. Subsequent sections will discuss its components, algorithm and implementation issues. Case study on three CSPs with three Quality metrics will be executed using CloudSim simulator. We envision the present research will benefit all those users who are interested in SLA based selection and ranking of CSPs.