Date Added: Jan 2010
The backbone of IT infrastructure is evolving towards a service-oriented model, in which distributed resources, either software or hardware, can be composed as a customized IT service on demand. In particular, cloud computing infrastructure services manage a shared "Cloud" of servers as a unified hosting substrate for diverse applications, using various technologies to virtualize servers and orchestrate their operation. Emerging cloud infrastructure-as a-service efforts include Eucalyptus, Nimbus, Tashi, OpenCirrus, and IBM's Blue Cloud. Extending cloud hosting into the network is a crucial step to enable on-demand allocation of complete networked IT environments. This paper reports on the effort to advance cloud resource control to cloud networks with multiple substrate providers, including network transit providers.