Abstract
Web 2.0 facilitates the construction of the autonomous decentralized network "outside" enterprises. This network is constituted by each autonomous customers and supplier. In this research, we describe a new wave of organization model "inside" enterprises. Yumenomachi Souzou Iinkai is one successful enterprise on Internet portal business in Japan. The detail of the management and business model of the case were described in this research. The case indicates that a new enterprise model based on an autonomous decentralized organization is emerging in IT industry in Japan.