W2000 as a MOF metamodel

Web applications are becoming more and more complex and sophisticated. The increasing complexity, and the many different aspects that should be modeled at the same time, require that supporting notations be wide enough to let designers specify all required aspects, and flexible enough to cope with the different degrees of sophistication and evolving situations. W2000, the last heir of HDM, satisfies the first requirement by proposing a complete approach to the specification of Web applications and the second requirement by precisely defining W2000 through a MOF metamodel. This paper does not focus on the modeling primitives offered by W2000, rather, we present the metamodel and we discuss its use, as a means to render the design concepts of W2000, and the choice of MOF as supporting technology.