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We present the characteristics of component-based software engineering and derive the requirements for a corresponding development process. Based on this, we propose changes and extensions for the V-Modell, the German standard process model for information systems development in the public services. Following this model, we cover not only systems engineering, but also project management, configuration management, and quality assurance aspects.

This chapter deals with the changeability of order management systems (OMS). OMS are here referred to complex commercial off-the-shelf software (CCOTS) used, for example, for enterprise resource planning (ERP). Due to turbulent conditions in the business environment, a permanent need for change is the defining challenge for enterprises. However, far too often the rigidity of today’s CCOTS-OMS does not allow users to implement the intended changes in the business organization. In order to deal with this challenge, a cybernetic model of order management is presented in this chapter. Additionally, a decision oriented software engineering and architectural design for CCOTS-OMS is sketched. The authors are convinced that these approaches enhance the changeability of the development and operation of CCOTS-OMS as well as their co-operation with a business organization.

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