Change-point detection for black-box services

Modern software systems are increasingly built out of services that are developed, deployed, and operated by independent organizations, which expose them for use by potential clients. Services may be directly invoked by clients. They may also be composed by service integrators, who in turn expose the composite artifact as a new service. Continuous change is typical of this world. Providers may change services and the deployment infrastructure to meet continuously changing requirements and be more competitive. Clients may change their operational profiles. Changes have a severe impact on the quality of services.