The theory, concepts and tools used for multilevel models for cloud based application- TutorsIndia.com

1. THEORY, CONCEPTS AND TOOLS USED FOR MULTILEVEL MODELS FOR CLOUD BASEDAPPLICATION An Academic presentationby Dr. Nancy Agens, Head, TechnicalOperations,TutorsIndia Group www.tutorsindia.com Email:info@tutorsindia.com

2. Today'sDiscussion In Brief Introduction CloudComputing Different Models of Cloud Cloud Service Models Cloud deployment models Conclusion OUTLINE

3. InBrief Cloud computing has been gaining considerable attention for different industries. The occurrence of large volumes of data has made it necessary to process and store the required data. This large volume of data cannot be processed by a single computer or a small group of computers. Thus the falling costs of hardware and abundant data availability are the key forces that motivate to use cloudcomputing.

4. Cloud computing has nowadays become an inseparablepart of the different academiaindustries. Employing large number of networked devices, using different internet servicesetc activities have resulted in generation of large volumes of data which requires processing as well asstorage. Introduction This processing and storage of datais sometimes not possible by single computer and hence requires integration of large number of computers in specially designed accommodations, datacentres. Cloud computing has enabled to use a large number of resources and thus facilitated resolving issues arising in differentdomains.

5. CloudComputing Cloud computing can be defined as a technology that facilitates easy and on-demand access to a number of configurable computing resourceswhich can be arranged and provided by the serviceprovider. This reduces the effort of the users and thus the users need not be bothered about specifications of technology being used while deploying their application as these aspects are manage by the cloud serviceprovider. Cloud computing has been labelled as Greener Computing Alternative due to its facilities such as access to a pool of resources and thus enabling a reduction in the costs forcompany. Some of the studies conducted by AT&T have identified the positive impact of the technologyonenvironment.

6. The models of a cloud are generally categorized into twotypes; service models and deploymentmodels. There are three models of service in cloud. Theyare: Software as a service (SaaS) Platform as a service (PaaS) Infrastructure as a service(IaaS) Different Modelsof Cloud Similarly, there are three deployment models in cloud. Theyare: Private cloud Public cloud Hybridclouds Contd..

7. Figure 1: Different Models ofCloud

8. Cloud ServiceModels Software as a service (SaaS): This model of the cloud enables the end users to use and rent the applications from the CSP without downloading them on theirsystems. This implies that the licensed applications used by end users are actually installed on cloud infrastructureand are being used by the users through interface of thin/thick clients such as Google chrome, internet exploreretc. Advantages of SaaS Applications on SaaS can be used by multiple users at a time because SaaS is based on one-to-many concept. Controlling and managing applications is the responsibility ofCSP. Contd..

9. Platform as a Service (PaaS): As the name implies this service model supplies a suitable environment to the developer for developing applications and software for deploying them viainternet. Advantages ofPaaS Follows one-to-many principle and thus multiple developers can work on one application. It allows the users to control the application developed by them and also allows creating new platform ifrequired. Infrastructure as a Service (IaaS): This model of cloud supplies virtual infrastructureand raw hardware which can be helpful for creating, managing and destroyingstorage. Advantages ofIaaS The client or users are able to increase or decrease the infrastructure as per their requirement. Minimizes the cost of human resources andhardware.

10. Cloud deploymentmodels Private cloud: This model is meant especially for the company and cannot be accessed by thepublic. Thus it is called as privatecloud. This cloud offers maximum datasecurity. Public cloud: This model offers many features such as data storageetc which are facilitated by serviceproviders. It is based on pay-as-you-usemodel. Hybrid cloud: This cloud model as the name suggests includes features of both private as well as publiccloud.

11. Cloud technologycan be defined as a model that identifies the issues associated with reliability and quality ofservice. Conclusion Contrary to the traditional computing techniques, the toolsand technologies used or involved in cloud computing help in computing intensive data operations at attractively lowprices.

12. CONTACTUS UNITEDKINGDOM +44-1143520021 INDIA +91-4448137070 EMAIL info@tutorsindia.com