The emergence of more and more cloud offerings from a multitude of service providers calls for a meta cloud, which smoothens the jagged cloud landscape. We discuss our proposal for such a meta cloud, and explain how it solves the lock-in problems that current users of public and hybrid clouds face. The cloud computing paradigm has found widespread adoption throughout the last years. The reason ...

Cloud computing is becoming the new generation computing infrastructure, and many cloud vendors provide different types of cloud services. How to choose the best cloud services for specific applications is very challenging. Addressing this challenge requires balancing multiple factors, such as business demands, technologies, policies and preferences in addition to the computing requirements. Th...

More and more clients would like to store their data to PCS (public cloud servers) along with the rapid development of cloud computing. New security problems have to be solved in order to help more clients process their data in public cloud. When the client is restricted to access PCS, he will delegate its proxy to process his data and upload them. On the other hand, remote data integrity check...

Idea: • Transform each original program into a public program and a private program. • Public program: execute on the public cloud; perform most execution except for evaluating predicates of branch statements. • Private program: execute on private cloud; evaluate predicates. Proposed Techniques: • Replace predicates of the branch statements in the original program with control flow query (CFQ) ...

Customer Relationship Management is crucial influencing factor for competitiveness in saturated markets. Public cloud-computing services for customerrelationship management provide many benefits. However, their usage in Europe is reluctant. Our research identifies several core and sub-influence factors and reveals how strong they are. Enterprises strive for covering risks in terms of safety and...

AppScale is a scalable, distributed, and fault tolerant cloud runtime system that we have developed at the University of California, Santa Barbara as part of our research into the next generation of programming systems [5, 3]. In particular, AppScale is a cloud platform, i.e. a platform-as-a-service (PaaS) cloud fabric, that executes over cluster resources. The cluster resources underlying AppS...

Cloud computing appears as a new paradigm and its main objective is to provide secure, quick, convenient data storage and net computing service. Even though cloud computing effectively reduces the cost and maintenance of IT industry security issues plays a very important role. More and more IT companies are shifting to cloud based service like Private, Public and Hybrid cloud computing. But at ...

Cloud computing has been popular as the IT architecture. Cloud service providers offer many services based on cloud computing. Cloud storage service is the cloud services which can provide a huge storage space to solve the bottleneck of the storage space of local end users. However, cloud storage service may have data security because the users’ data is not stored in their own storage. In this ...

Cloud Computing is a class of network based computing over Internet. Cloud data services not only stores data in the cloud but also shares across multiple users. The integrity of cloud data is subjected to reluctance due to failure of either hardware or even software and also human errors as well. Several mechanisms have been designed in order to allow both the data owners as well as the public...