Phidias: PHIDIAS (Hybrid Platform for the Intelligent Diffusion of Applications and Services for Television) is an Avanza Plan project. Its objective is the development of an integrated platform for hybrid broadcast broadband television (HbbTV) that combines the broadcast and broadband delivery of television through the Internet. The aim is to investigate different alternatives for technological solutions for HbbTV by developing specific applications (social networks, personalized advertising, interactive applications etc.). The ultimate objective is to produce a working model for both terrestrial and satellite television.