Service Level Agreements (SLA) are needed to allow business interactions to rely on Internet services. Service Level Objectives (SLO) specify the committed performance level of a service. Thus, SLA compliance auditing aims at verifying these commitments. Since SLOs for various application services and end-to-end performance definitions vary largely, automated auditing of SLA compliances poses t...

Network services can be classified as public services or private services. Public services are offered to the anonymous public in the public part of the Internet, whereas private services are provided exclusively to selected user groups. Offering private services outside a secure intranet environment may constitute a security risk to the service provider. In this paper, we propose to increase s...

Cloud computing refers to Internet based development and utilization of computer technology, and hence, cloud computing can be described as a model of Internet-based computing. Actually, it is a style of computing, in which dynamically scalable (and mostly virtualized) resources are provided as a service over the Internet. The concepts behind cloud computing incorporate Software-as-a-Service (S...

This paper describes a realization approach to evaluate the best fitting service provider in the context of "The Digital Beethoven House" pilot project, involving the digitizing of a composer-referred collection of colored manuscripts and other sources at the Beethoven House Association (Germany). Practical hints for museums are provided on how to find the right scan service providers, how to d...