Despite pressures of economic slowdown and the e-commerce bubble burst, moving towards e-services is a compelling necessity for today's organizations. Companies that are reluctant to adopt a service-oriented architecture in their IT systems will be missing out on unprecedented opportunities to create business value with relatively small IT investments. ""Engineering Service Oriented Systems: A Model-Driven Approach"" combines concepts from systems theory, model driven software engineering, and ontologies for software engineering into a systematic method for engineering service oriented systems while integrating both business and software perspectives.