The focus of this paper is construction process of internet applications and working out of architecture internet applications on the basis of the built-in dynamic models and XML. The idea of the built-in dynamic models is known for a long time. This idea was successfully used at the construction of control system by technical objects and electronic documents. This idea is used for organization of the process of functioning of the internet application. This approach supposes integration of dynamic model into a server script and interpretation in the process of functioning of the internet application.