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Cloud computing often uses the multi-tenancy architecture where tenants share system software. It is one of the key features of Software as a Service (SaaS) that enables higher profit margin by leveraging the economics of scale. Tenants residing on a ...

The evolution of the mobile landscape coupled with the ubiquitous nature of the Internet and the cloud is facilitating the deployment of enterprise and personalized mobile applications. In this research, we proposed a proxy-enabled unification framework ...

Strong user expectations for protecting their cloud-hosted IT systems make enhanced security a key element for cloud adoption. This means that cloud infrastructure security should be guaranteed, but also that security monitoring services should be ...

We proposed an evaluation method to determine the vulnerability of services instantiated on cloud computing infrastructures to improper system management (e.g., system structure having single point of failures and executions of misconfigurations giving ...

Analyzing behavioral patterns of workloads is critical to understanding Cloud computing environments. However, until now only a limited number of real-world Cloud data center trace logs have been available for analysis. This has led to a lack of ...

Hadoop has become a central big data processing framework in today's cloud environments. Ensuring the good performance and cost effectiveness of Hadoop is crucial for the numerous applications that rely on it. In this paper we analyze Hadoop's ...

Low liquidity in cloud markets can result in market instability and inefficiency, preventing the successful implementation of ubiquitous computing on demand. To circumvent this issue, it has been suggested to channel demand and supply into a limited ...

One major benefit claimed for cloud computing is cost saving, which stimulates enterprises to migrate their workload to cloud. Cost Models and assessment approaches appear as major tools aiming at better understanding and deciding cloud migration. ...

In this article, we paid more attention on researching how to monitor Web services for checking conformance, where an AOP-based run-time monitoring framework was proposed and explored. In the framework, WS-Policy was firstly used to express the ...

Promoted by the Service Computing paradigm, service composition has played an important role in modern software development. Currently, available services have covered a wide spectrum of heterogeneity, including SOAP services, Restful services and other ...

The Future Internet (FI) vision fosters the establishment of highly dynamic and continuously evolving systems in which different organizations, via provided e-services, dynamically cooperate at run-time, and possibly just for a single application level ...

Negotiation is a key aspect of Service-Oriented Systems, which is rarely supported by formal models and tools for analysis. Often, service negotiation proceeds with timing, cost and resource constraints, under which the users and providers exchange ...

Business intelligence (BI) is a critical software system employed by the higher management of organizations for presenting business performance reports through Online Analytical Processing (OLAP) functionalities. BI faces sophisticated security issues ...

Resource planning is the greatest challenge cloud computing service providers face, because it is difficult to predict future resource demands. Fluctuation in demand coupled with inadequate resource planning causes over-or under-utilization of many ...

In the cloud environment, load balancing is a fundamental technique for optimizing utilization and achieving sharing of computing infrastructures. However, it becomes impractical to tackle load balancing issue manually as the enlargement of cloud ...

In order to meet Service Level Agreement (SLA) requirements, efficient scaling of Virtual Machine (VM) resources must be provisioned few minutes ahead due to the VM boot-up time. One way to proactively provision resources is by predicting future ...

The phenomena of service performance or availability degradation have been widely observed in the long running software systems, which is called ®software aging'. It's hard to measure software aging due to the inherent complexity and dynamic of software ...