One of the main factors of success for the implementation of SOA-based software systems in a globally networked environment is efficient and effective collaboration. To support globally distributed collaborative software engineering, model driven development processes are indispensable. In this paper we present a new framework based on XML nets, a variant of highlevel Petri nets, and XML standards to manage the development of complex SOA-based systems. The framework provides a model-based analysis and implementation of prototypes and complete application systems based on generators. The model covers all relevant aspects from the underlying web services up to the front-end of a respective web application.