Trijų dominuojančių paslaugų kokybės modeliavimo būdų kritinė analizė ir vertinimas

Abstract

The service-oriented architecture (SOA) becomes dominant paradigm in the development of webbased systems. The paper critically analyses three prevailing approaches to SOA quality of service (QoS) modelling, namely, SQuaRE based Web Services Quality Model, OASIS Quality Model for Web Services and an ontology based QoS modelling approach proposed by Beanchini and co-authors. The main contribution of this paper is that it highlights both conceptual similarities and differences of the analysed approaches, examines their shortcomings and the reasons for their inability to model QoS adequately in service-oriented enterprise systems context. It also gives arguments for the need to develop a new, holistic QoS modelling approach.