This document discusses 3D Internet (also known as virtual worlds), which is described as the next generation of the current 2D web. It will consist of interconnected virtual services presented as 3D virtual worlds. Users will be able to see and interact with other users in an immersive 3D environment. The document outlines how 3D Internet works and some of its potential applications in areas like education, entertainment, and commerce. It also discusses some of the key technologies and components needed to enable 3D Internet, as well as challenges associated with its implementation.