Measuring & Managing the Quality of NetCentric "On Demand" Services
To capitalize on the growing availability of NetCentric "On Demand" services, Enterprises will need means for measuring and managing the end-to-end Quality of Service (QoS) provided by the linked chains of internal and external computing and communications services that will be supporting their mission critical applications.

A series of recent research advances have the potential of providing solutions to this problem space by enabling coherent measurement and management of each link in these end to end chains, including the dynamic management of competing application computing and communications service requests. Many of these advances are the result of DARPA's "Quorum" QoS middleware research program, encompassing technologies that support the specification, measurement and control of each link in a given critical service chain.

When converted into industrial products and services, these technologies will enable the creation of metrics based specifications for each link in a given service chain, augmented by QoS Metrics Services (QMS) that will provide dynamic measurements of the actual services being provided.

By comparing actual to specified services, link Resource Managers will then be able to dynamically allocate computing and communications resources, as required to assure compliance with link specifications. Resource Managers, in turn, will be driven by dynamically assigned Resource Management policies. These policies will designate current applicable rules for allocating resources, when requested services exceed available resource capabilities.



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