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This paper evaluates the promises of service reusability through an analysis of services implemented in a manufacturing enterprise. A total of 103 services implemented in the case enterprise are analyzed to understand the enablers and obstacles that have led to the reuse ratio of 13 %. The main identified enabler for reusable services was the capability to define the services as a part of reusable business concepts, which is aligned with some of the earlier studies on the adoption of service-oriented architecture in enterprises. The main reason for having overlapping services in the case enterprise was lagging migration of legacy services to use newer, reusable services. The results can be used to develop service engineering methodologies for better reusability, and the paper provides practical guidelines to help in the application of integration development efforts toward reusable services.

This chapter introduces QSE, the Qualitative Service Elicitation method. It applies qualitative research procedures in service elicitation. Service engineering practice lacks lightweight methods to identify service candidates in projects with tight schedules. QSE provides a systematic method to analyze requirement material in service-oriented systems development with a feasible effort. QSE uses the procedures of the grounded theory research method to elicit service candidates from business process descriptions and business use case descriptions. The chapter describes the method with examples and a case study.

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Service-oriented computing has created new requirements for information systems development processes and methods. The adoption of service-oriented development requires service identification methods matching the challenge in enterprises. A wide variety of service identification methods (SIM) have been proposed, but less attention has been paid to the actual requirements of the methods. This paper provides an ethnographical look at challenges in service identification based on data from 14 service identification sessions, providing insight into the practice of service identification. The findings identified two types of service identification sessions and the results can be used for selecting the appropriate SIM based on the type of the session.

The chapter introduces QSE, the Qualitative Service Elicitation method. It applies qualitative research procedures in service elicitation. Service engineering practice lacks lightweight methods to identify service candidates in projects with tight schedules. The QSE provides a systematic method to analyze requirement material in service-oriented systems development with feasible effort by utilizing the procedures of the grounded theory research method to elicit service candidates from business process descriptions and business use case descriptions. The chapter describes the method with examples and a case study.