A Synopsis Of Cloud Computing

As previously mentioned, cloud computing has recently emerged as a pioneering model for hosting and distributing services over the Internet. Actually, the model entails sharing resources on a huge scale through a value effective and location independent process. While the resources on the cloud are deployed by the seller, they are utilized by the consumer (Belamkar, 2014). Cloud computing is very beneficial to organizations and companies because it is engaging to business organizations

The focus of cloud computing is providing with scalable and a cheap on-demand computing infrastructure with a good quality of service levels. The process of the cloud computing involves a set of network enabled services that can be accessed in a simple and general way. Cloud computing provides with a unique value proposition for any organization to outsource their information and communication technology infrastructure. Moreover, the concept itself provides with a value proposition for an organization as using the cloud saves on cost, resources, and staff, and business opportunities for the organization (Katzan). An extensive connectivity of

Cloud computing offers services to users based on on-demand self-service, broad network access, measured service, resource pooling and rapid elasticity; These characteristics promise a faster time for implementation, lower cost, superior scalability and a better end user satisfaction. These services are delivered in models known as Software As A service (SaaS), Platform As A Service (PAAS), and Infrastructure As A Service (IAAS). The first layer which is the Software As A service (SaaS) is the layer in which software applications are delivered to end users. Below is the Platform As A Service (PAAS) layer which offers a platform on which applications can be developed. The lowest layer is the Infrastructure As A Service (IAAS) layer, in this layer the physical servers and network infrastructure is offered as a service. These services can be deployed throughout the internet (Public Cloud Computing), on the intranet infrastructure, (Private Cloud Computing), in a shared community of private networks (Community Cloud Computing), or a hybrid of both (Hybrid Cloud Computing). The service deployment models are [8]:

Cloud computing is innovative which uses well advanced computational power resource and gigantic improvement in storage capabilities, Cloud is the long dreamed vision of computing utilities, which helps in enable ling the sharing of

Cloud computing is a model which enables an expedient and on demand network access to a shared pool of configurable computing resources. These include networks, servers, storage applications and services which can easily be available with little managerial effort or the interaction of the service provider. The authors of this article seek to identify the critical factors which are needed in order to effectively deploy cloud computing, this was done by looking at key insights which could have an impact n the deployment of cloud computing. (Garrison, Sanghyun, & Wakefield, 2012).

The introduction of cloud computing infrastructure has brought in many changes to the infrastructure of any IT organization. Cloud computing has become the latest and most advanced infrastructure service to date. More and more companies are migrating to cloud computing service as days go, as they provide more flexibility and scalability and user friendliness in many aspects of an IT infrastructure.

A hybrid Cloud Deployment model with a combination of Public, Private and Community models will be used. The Cloud Service Delivery model will be a combination of SaaS, PaaS and IaaS to satisfy the requirements of the multiple business units within the organization, customers, and suppliers resulting in a cost reduction through optimized and efficient computing

By 2020, Forbes (McKendrick, 2012) has estimated that the cloud market will be worth $270 billion; this suggests that the market is expanding rapidly and users are becoming more aware of this feature. Many people, though, still ponder over the exact purpose of cloud computing: Cloud computing is a group of offline servers that are networked together to allow data to be stored centrally. For example, Drop box is an established cloud storage company that allows users to store documents, images and videos on their servers. This type of cloud computing is known as ‘Software-as-a-Service’, which are business applications that are hosted by the provider and delivered as a service (Hurwitz, 2010). Hurwitz also mentions two other types of cloud computing: ‘Platform as a Service (PaaS)’ and ‘Infrastructure as a Service (IaaS)’. ‘Platform as a service’ is where the consumer will create an application, using tools and software from the provider, then the provider will administer the consumer with networks, storage and servers. ‘Infrastructure’ as a service is where the provider will provide the consumer with physical computer or virtual machine.

This section of the article describes cloud computing as a group of computer systems connected over a public or private network that provides dynamically scalable infrastructure (equipment and software) for application, data and file storage. This means that the cloud can be easily modified to add or remove resources and infrastructure as needed. In continuing with the overview, the article notes that cloud computing is an innovative approach to traditional computing methods that can be utilized through the different cloud models.

IT departments and infrastructure providers are under increasing pressure to provide computing infrastructure at the lowest possible cost. In order to do this, the concepts of resource pooling, virtualization, dynamic provisioning, utility and commodity computing must be leveraged to create a public or private cloud that meets these needs. Cloud computing is a general term for anything that involves delivering hosted services over the Internet. This provides the smaller

In the last few years, the advancement of cloud computing technology has revolutionized the IT infrastructure and business model of many organizations. Businesses from green field startups, to enterprises and market giants have repositioned their services and infrastructure to take benefits of Cloud computing models. Cloud technology is leveraged by the underlying infrastructure and virtualization techniques that make the magic of on demand resource allocation, service orchestration possible. While the Internet provides the ubiquitous access necessary for utilization of the cloud services.

Cloud computing comes in three distinct implementations or models, each with its own pros and cons. The advantage is that each can be tailored to meet a specific need. The three different implementations are Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). In IaaS, an organization uses the cloud to provide virtual resources, such as storage space for data or online databases. Amazon’s Simple Storage Service (S3) is an example of IaaS, with customers utilizing the S3 cloud to store information. PaaS implementations run on top of IaaS, giving the organization flexibility to implement customized applications, such as specific portions of Google apps. Finally, SaaS is the transition to almost all operations to the cloud. In SaaS, a small blade system is used to connect to the cloud through an Internet connection where all the software and major computing power is stored. Instead of having an OS installed on each desktop system, the OS and everything else needed is stored on the cloud servers and accessed through a web browser or custom plug-in. (Neamtiu & Dumitras, 2011)

Cloud computing is defined by Cearly and Phifer in their case study titled “Case Studies in Cloud Computing” as “a style of computing in which scalable and elastic IT-related capabilities are provided ‘ as a service’ to customers using Internet technologies”. Cloud computing services had been provided by major vendors such as Google, Amazon, Microsoft, IBM, Hewlett-Packard, and others for business computing until recently when Apple Corporation announced iCloud for consumers. Therefore, cloud computing is now available for businesses as well as consumers. Read the case study titled, “ Ericsson”, located here, about Ericsson cloud computing.

Cloud computing has become a compelling paradigm for delivering and managing services over the internet. Although it might be difficult to define cloud computing, one simple definition of the term is virtualized third-party hosting. In simple terms, instead of renting the entire or actual physical server, one rents a certain proportion of server resources. The client’s server runs within a virtual container that may be moved from a physical server to another without service interruption. Cloud computing has changed the entire landscape of Information Technology, and it is finally actualizing the long-standing promise of utility computing. This paper serves as a comprehensive overview of the cloud computing technology; definition,

Cash-strapped organizations look for alternatives which can reduce their capital investments involved in purchasing and maintaining IT hardware and software so that they can get maximum benefits of IT. Cloud computing (CC) becomes a natural and ideal choice for such organizations and customers. Cloud computing takes benefit of many technologies such as server consolidation, huge and faster storage, grid computing, virtualization, N-tier architecture and robust networks. It delivers highly scalable and expensive infrastructure with minimal set up and negligible maintenance cost. It provides IT-related services such as Software-as-a-Service, Development Platforms-as-a-Service and Infrastructure-asa-Service over the network on-demand anytime from anywhere on the basis of “pay-as-you-go" model. It is a fast growing concept changing the IT related perceptions of its users. Elasticity, scalability, high availability, priceper-usage and multi-tenancy are the main features of Cloud computing. It reduces the cost of using expensive resources at the provider’s end due to economies of scale. Quick provisioning and immediate deployment of latest applications at lesser cost are the benefits which force people to adopt Cloud computing. Cloud computing has brought a paradigm shift not in the technology landscape, but also in the database landscape. With more usage of Cloud computing,