The New Dimension Of Cloud Computing

Cloud computing models has become the paradigm in more and more organizations. Organizations have realized and assessed both advantages and disadvantages and are willing to adopt it to their information security posture. Reduction in overhead cost is the greatest advantage that organizations look for and cloud computing allows for this. Disaster recovery is another

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 a new paradigm in the computer virtualization. It has transformed the technology and business and its use is growing rapidly. Unlike traditional system, where services are hosted at physical location, cloud computing offers a virtualized shared machine in a web based environment. Cloud computing has three types of service models and four

Abstract— As Cloud Computing is considered as the most influential technology in IT world which provides many facilities and increases the capability of our system without any extra hardware installment. So this paper focuses on the fault tolerance of web application by one of the major cloud service provider Amazon. We will provide the ways on the process adopted by Amazon and how we can improve the existing techniques of fault tolerance. We provide the detail infrastructure of the Amazon Web application design. Also the important part covered in this paper is the computation done in cloud computing. As it is required that the computation should be in complete secure way and also doesn’t get infected by malicious and faulty cloud. So we define the ways to employ the method and how to distribute the data to different clouds. We will demonstrate this using the calculation of matrix multiplication.

Cloud computing has evolved with the passage of time and has revolutionized the entire ICT industry. Cloud computing is categorized into two forms Service oriented computing and Grid Computing. Service oriented Computing is an transpiring paradigm that has revamped the consumption of software and related product all around the globe. The core functionalities that service oriented computing provide is elements and that are independent of platforms and are programmed using standard protocols to support distributed computing across various organizations. [2]

With the growing of technology and people around the world using the internet more often, the cloud is becoming more popular than ever before. The United States National Institute of Standards and Technology has defined cloud computing as follows: "Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction [1]." There are many uses of the cloud but the main uses people use the cloud for is to host websites, store documents, and to stream TV shows and movies. With all this new flooding of the cloud computing network, the dependability of cloud computing systems have come into question for all cloud service providers, consumers, and brokers around the world. Fig. 1 is just one example of the growth of cloud computing of a single company.

Technically, Cloud is as a term of a platform, it provides, configures and reconfigures servers while the servers could be virtual machines and physical machines. Additionally, Cloud is also as a term of applications that are described as to be accessible over the internet based on the support from powerful servers and large data centers. Therefore, Cloud is quite different from traditional computing paradigms because of its scalable. Cloud is an abstract entity to supply different levels of services. Shown by figure 1, Cloud is typically providing three types of services: Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS).

Cloud computing has rapidly increased their services for IT infrastructures solutions in the last years, reducing cost of investment of supplies and maintenance becoming a promising concept in the business and IT industry. The cloud provides shared data center, automatic upgrades, security and performance. However, cloud’s safety and standardization have been a challenge when different types of clouds need to be connected. Resource management issues as Quality of service (QoS) and the increasing of complexity and functionality failures are a constant in cloud computing environments, and should be considered by customer when looking for cloud solutions to adapt their organization’s requirements. This paper will explain the

The boom in the cloud computing world has led to a new era of on demand delivery of hosted service over a shared network. Cloud computing is a complex infrastructure of software, hardware and storage that is available as a service. It has flexibility rendering user to customize the service suited to his needs. Innovations in virtualization and distributed systems have paved the path for interest in cloud computing.

Simply put, cloud technology means sharing resources, information, and software over a network such as the internet as opposed to using a personal computer, server, or other computer hard drive. It is delivered as a service rather than a product like traditional computing. The different services are called Software as a Service or “SaaS, Infrastructure as a Service “LaaS”, Computing as a Service “CaaS”, and Platform as a Service “PaaS”. Many people believe that moving to the cloud is the future of IT and several businesses already rely on the cloud for all of their technology needs. We are going to look into how cloud computing works, what makes it successful and what are some issues that may arise from moving away from traditional

There are three main types of cloud-computing services: (1) Infrastructure as a Service (IaaS), (2)

Abstract. Cloud computing is the upcoming generation of computation. Internet based computing is known as cloud computing, where software and hardware resources provided to the user on demand. Cloud computing is new paradigm that uses dynamically scalable shared resources e.g. networks, servers, storage, applications and services. It provides different cloud services through which resources can be swiftly providing and released with minimum management efforts. In this paper, we aim to pinpoint the types of cloud, services and difference that shows how effective cloud computing from other paradigm (Grid computing, Utility computing and Mainframe). Last, we will provide an overview on the various challenges and risk associated to cloud computing that deserves future research.

The primary forum for presenting research in this field has been the yearly IEEE International Symposium on Fault-Tolerant Computing (FTCS) and the papers in its Digests give an essential reference source.

Cloud systems are not just another form of resource provisioning infrastructure and in fact, have multiple opportunities from the principles for cloud infrastructures that will enable further types of applications, reduced development and provisioning time of different services. Cloud computing has particular characteristics that distinguish it from classical resource and service provisioning environments.

Fault tolerance is the characteristic of a system that tolerates the class of failures. It will analysis the performance and enables a system to continue its intended operation, possibly at a reduced level, rather than failing completely, when some part of the system fails. The system as a whole is not stopped due to problems either in the hardware or the software. [1][2] Fault tolerance is the ability for software to detect and recover from a fault that is happening or has already happened in either the software or hardware in the system in which the software is running in order to provide service in accordance with the specification. [3]Fault tolerance is not a solution unto itself however, and it is important to realize that software fault tolerance is just one piece necessary to create the next generation of systems. A highly fault-tolerance system might continue at the same level of performance even though one or more components have failed. For example, a building with a backup electrical generator will provide the same voltage to wall outlets even if the grid power fails [4].