Recently, a number of authors who work on web application modelling have paid attention to the ideas regarding
separation of concerns that underlie aspect-orientation, as well as some ideas that come from the model-driven development
community. They attempt to improve the representation and separation of some concerns such as customisation or navigational
concerns that are scattered throughout different software artifacts and tangled with other concerns in order to give a best support to
the evolution of web applications. This paper surveys recent proposals in this field and compares them within a homogeneous
framework that bridges the gap between the many different terminologies used, and highlights open problems that need further
research.Ministerio de Ciencia y Tecnología TIN2007-64119Ministerio de Ciencia y Tecnología TIN-2007-67843-C06-0
