How to dimensioning the interactive server in interactive media systems and interactive media system

The size of the interactive server for an interactive TV system, depending on the predicted likelihood of interaction with the user is dynamically determined. In one exemplary embodiment, dimensioning system (60), the number of requests for interactive media programs, based on the category for the interactive media program to assess the likelihood of an event, the expected likelihood of events based on determines the size of one or more interactive server (26).