Cloud defines a new age of computing solution that provides services to customers with its unique features of agility and multi-tenancy. As the critical resources are hosted at cloud provider’s end, security is a big challenge in cloud computing. If the cloud environment is compromised and attackers get the access of core data centers, the availability of the critical resources becomes a big co...

The paper focus on Fault Tolerance, a long standing problem in cloud computing by extending Primary Backup model to include cloud features such as virtualization and elasticity. Fault tolerance is a challenging work in Cloud Computing as virtual machines are the basic computing instances rather than hosts that enable virtual machines to migrate to other hosts. The on demand provisioning of reso...

There are now a vast array of heterogeneous cloud service resources, which makes it difficult to identify suitable services for the various types of cloud users. A classification of cloud service resources would help users find suitable cloud services more easily. We propose such a classification strategy, which has two parts. First, we improve the original naive Bayesian classification algorit...

Cloud computing is an internet-based model of computing, where the shared information, software and resources are provided to computers and other devices upon demand. Cloud computing provides enormous business opportunity. Cloud computing could dramatically lower the need for upfront investments in it and ongoing maintenance. User pay only for the time, resources, and capacities he uses while s...

Cloud computing is a paradigm shift over the Internet which provides instant access to software, hardware and computing information resources for use when they needed. Cloud Computing is the access of data, software applications and computer processing power through a “cloud” of online resources. Cloud computing involves storage of user data in the cloud. Cloud architectures will constitute cos...

Nowadays, the capability of cloud management suppliers is one of the important advantages for suppliers that can improve the performance and flexibility and reduce costs in companies through easy access to resources. Also, the environmental impacts of suppliers are a significant issue in today’s industrialization and globalization world. This paper analyzes these subjects by fuzzy multi-objecti...

Modern Infrastructure-as-a-Service (IaaS) provides flexible access to data center resources on demand in an elastic fashion to meet the highly variable workload requirements of cloud applications. Cloud providers aim to provision resources as efficiently and as quickly as possible to their consumers. However, the lack of information about the hosted applications and their workloads makes it har...

Cloud computing is accepted by many companies to put their resources such as server, storage and applications on the cloud network somewhere on internet. The end user’s data is placed on cloud infrastructures with minimal cost which makes cloud computing is one of the promising and growing technology. In an abstract terms, the cloud computing technology enable the users to access the large infr...

Cloud computing offers on-demand, elastic resource provisioning that allows an enterprise to provide services to their customers at an acceptable quality while consuming only the requisite computing resources as a utility. Since cloud computing resources scale elastically, utilizing cloud computing reduces the risk of over-provisioning, wasting resources during non-peak hours, and reduces the r...

One of the main features of High Throughput Computing systems is the availability of high power processing resources. Cloud Computing systems can offer these features through concepts like Pay-Per-Use and Quality of Service (QoS) over the Internet. Many applications in Cloud computing are represented by workflows. Quality of Service is one of the most important challenges in the context of sche...