Modern enterprises are continuously advancing the IT-based realization of interconnected, world-wide engineering processes between customers, manufacturers, suppliers, and other engineering partners. But, available solutions are supporting this kind of enterprise and process integration as well as the integration of product data inadequately. Regarding this, at the Department of Computer Integrated Design (DiK), TU Darmstadt, appropriate solutions were developed. The derived solutions are enabling enterprises domain-independently to form effective virtual networks of organizations and to optimize processes of collaborative engineering. This can be done by simultaneously improving the magical triangle of time, costs and quality efficiently.