This document provides an overview of a presentation on social media given by Sanjiv Choudhary. The presentation covers topics such as the definition of social media, classifications of social media, differences between social media and traditional media, popular social networking sites and their market share, and how various organizations use social media as a marketing and customer relationship management tool. The presentation concludes by stating that social, mobile, analytics, and cloud computing (SMAC) will be important for the future of the IT industry and marketing.