This document defines mass media and discusses its types. Mass media refers to all media technologies used for mass communication that are controlled by various organizations. The types of mass media discussed include print media like newspapers and magazines, recording media like records and CDs, cinema, radio, television, and the internet which includes websites, forums, messaging, streaming video and audio, and more. The document also mentions how digital transformation integrates conventional mass media with the internet and how content is now king across various distribution channels.