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Enterprises rely on IT services and their efficient management. Enterprises have a choice to produce their IT services in-house or source them from external service providers. In the latter case, business relationships must be managed with service providers, ranging from managing contracts, contacts, observing the delivery of service, receiving and paying(More)
Grid computing has relied on " best effort " as the guiding principal of operation. However, commercial grids need to provide much stricter guarantees. These guarantees have to be specified in terms of service level agreements and have to be monitored and assured. We propose an architecture for specifying and monitoring service level agreements to achieve(More)
virtualization, system management, Utility Data Center, OpenView HP's Utility Data Center (UDC) [1] is a prominent example of how applications are provided with virtualized storage and network resources. Systems like the UDC are on their way into enterprise IT infrastructures and will have impact on management systems. In this paper we review some of the(More)
grid computing, firewall, utility data centers, resource management, security, resource virtualization The " Grid " has become the next incarnation of the utility computing vision: seamless access to data and services anytime, anywhere. Sharing a utility infrastructure requires high standards of security. Grid platforms such as the Globus Toolkit, the Grid(More)
Peer-to-peer computing (P2P) draws growing interest as a new distributed computing paradigm for its potential to harness " edge " computers (e.g., PCs) and make their under-utilized resources available to each other. P2P based e-commerce on the Internet is of particular interest because of P2P's cost effectiveness and redundancy-induced dependability.(More)
The concept of Grid, based on coordinated resource sharing and problem solving in dynamic, multi-institutional virtual organizations, is emerging as the new paradigm in distributed and pervasive computing for scientific as well as commercial applications. We assume a global network of data centers housing an aggregation of computing, networking and storage(More)
self-organizing algorithms, adaptive service placement, distributed systems, grid systems In this paper we consider distributed computing systems which exhibit dynamism due to their scale or inherent design, e.g. inclusion of mobile components. Prominent examples are Grids-large networks where computing resources can transparently be shared and utilized for(More)
Best-practice frameworks provide guidance for organizing work in business. They enable reuse of experience within a domain. However, best practice frameworks are general and usually cover broad domains. Their guidance thus is often offered at an abstract level rather than as details of actionable tasks and processes to accomplish work. This paper presents(More)