The W Model for Component-based Software Development K.-K. Lau, F. Taweel and C. Tran School of Computer Science, The University of Manchester Manchester M13 9PL, United Kingdom {kung-kiu,ftaweel,ctran}@cs.manchester.ac.uk Abstract: For general (modular) system development with verification and validation (V&V), the V Model is the industrial standard. For component-based development, there is a well-understood standard process, but it does not specifically address V&V. In this paper, we propose such a model, that we call the W Model. We have implemented it using Model-Driven Engineering.