The pioneering concept of orchestration in the IT domain has been there for a long time now. For instance, in the service computing (SC) arena, the idea of service orchestration has been thriving in an unprecedented manner in order to produce and sustain highly robust and resilient services. Discrete or atomic services do not serve any substantial purpose unless, they are composed together in a particular sequence to derive process-aware composite services. As orchestrated services are more strategically advantageous for businesses in expressing and exposing their unique capabilities in the form of identifiable/discoverable, interoperable, usable, and composable services to the outside world; corporates are showing exemplary interest in having an easily searchable repository of services (atomic as well as composite). This repository, in turn, enables businesses in realizing large-scale data as well as process-intensive applications. It is clear that the multiplicity...