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

THEORY, CONCEPTS AND TOOLS USED FOR MULTILEVEL MODELS FOR CLOUD BASED APPLICATION An Academic presentation by Dr. Nancy Agens, Head, Technical Operations, TutorsIndia Group www.tutorsindia.com Email: info@tutorsindia.com

Today's Discussion OUTLIN E

In Brief Introduction Cloud Computing Different Models of Cloud Cloud Service Models Cloud deployment models Conclusion

In Brief 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 cloud computing.

Cloud computing has nowadays become an inseparable part of the different academia industries.

Introductio n

Employing large number of networked devices, using different internet services etc activities have resulted in generation of large volumes of data which requires processing as well as storage.

This processing and storage of data is sometimes not possible by single computer and hence requires integration of large number of computers in specially designed accommodations, data centres.

Cloud computing has enabled to use a large number of resources and thus facilitated resolving issues arising in different domains.

Cloud Computing Cloud computing can be defined as a technology that facilitates easy and on-demand access to a number of configurable computing resources which can be arranged and provided by the service provider.

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 service provider.

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 for company.

Some of the studies conducted by AT&T have identified the positive impact of the technology on environment.

The models of a cloud are generally categorized into two types; service models and deployment models.

There are three models of service in cloud. They are:

Differen t Clou Models d of

Software as a service (SaaS) Platform as a service (PaaS) Infrastructure as a service (IaaS) Similarly, there are three deployment models in cloud. They are: Private cloud Public cloud Hybrid clouds

Contd ..

Figure 1: Different Models of Cloud

Cloud Service Models 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 their systems.

This implies that the licensed applications used by end users are actually installed on cloud infrastructure and are being used by the users through interface of thin/thick clients such as Google chrome, internet explorer etc.

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 of CSP. Contd..

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 via internet.

Advantages of PaaS 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 if required.

Infrastructure as a Service (IaaS): This model of cloud supplies virtual infrastructure and raw hardware which can be helpful for creating, managing and destroying storage.

Advantages of IaaS The client or users are able to increase or decrease the infrastructure as per their requirement. Minimizes the cost of human resources and hardware.

Cloud deployment models Private cloud: This model is meant especially for the company and cannot be accessed by the public.

Thus it is called as private cloud.

This cloud offers maximum data security.

Public cloud: This model offers many features such as data storage etc which are facilitated by service providers.

It is based on pay-as-you-use model.

Hybrid cloud: This cloud model as the name suggests includes features of both private as well as public cloud.

Cloud technology can be defined as a model that identifies the issues associated with reliability and quality of service.

Conclusio n

Contrary to the traditional computing techniques, the tools technologies used or involved in cloud computing help in and computing intensive data operations at attractively low prices.

CONTACT US UNITED KINGDOM

+441143520021 INDIA

+914448137070 EMAIL