Abstract
Cloud Computing has been a buzzword for quite a while. A lot of companies are offering cloud infrastructures and services, which can be used by organizations and individuals at a nominal charge. There are various cloud providers in the market. But, when it comes to interoperability or quality attributes of the different types of cloud services by different cloud providers, there is no consensus on standards. The other but yet important issue is there is no framework, which can define the quality attributes of a cloud and measure them. Different companies have used different architectural patterns for implementing their cloud. But, none of them have proved to provide a good balance of the quality attributes such as Greenability, Availability, Security, Reliability, Performance, Portability or Interoperability etc. In this paper, we proposing an architectural framework for defining and measuring the quality attributes of a cloud and to customize these quality attributes to satisfy the quality requirements of different subscribers, which can make the cloud more usable and adoptable by reducing the cost and increasing the profit for the cloud vendors. It also makes it possible for the same cloud to behave differently for different subscribers according to their needs. supplied as services upon demand. The cost is distributed across the businesses and hence reduces the capital cost. Private Cloud - The infrastructure of the cloud model is implemented at the organizations data center and is dedicated to that particular organization, thereby suffering no bandwidth restriction or exposure to outside public. The service can be hosted by the organization or externally hosted, which is cheaper. External hosting can keep the product or service under strict control. Virtual Private Cloud - It exists within a shared or public
Highlights
Cloud computing is an emerging field that is expected to change the entire information technology processes and IT market in future
The types of cloud are described in brief as follows: Public Cloud – All the services and infrastructure are accessed through Internet and the vendor’s premises host the cloud infrastructure
Various architectures are used for increasing the quality of cloud by leveraging one particular quality attribute, which is fixed for particular cloud environment
Summary
Cloud computing is an emerging field that is expected to change the entire information technology processes and IT market in future. It is changing how we develop, deploy, use the information technology and the infrastructure that it runs on. Cloud is comprised of the infrastructures, which are used only on demand and these infrastructures are released after the completion of the task. Clouds can be classified in various types [35]: Public, Private, Hybrid and Virtual Private. The types of cloud are described in brief as follows: Public Cloud – All the services and infrastructure are accessed through Internet and the vendor’s premises host the cloud infrastructure. The cost is distributed across the businesses and reduces the capital cost
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