This document provides an overview of various information and communication technologies (ICT). It begins by defining ICT and discussing its importance in modern society. It then covers the evolution of the World Wide Web from Web 1.0 to Web 2.0 to the emerging Web 3.0. Other topics summarized include the Internet of Things, convergent technologies, social media/networking sites, mobile technologies, assistive technologies, and various online systems and platforms. The document aims to compare and contrast different ICT to help teachers best achieve classroom objectives.