Today's top technology companies play an increasingly central role in our lives. People habitually use Apple or Samsung smartphones to monitor social networks such as Twitter and Facebook. Amazon and Netflix are disrupting the shopping and television industries. Google dominates online search and advertising, and Microsoft's software runs on the vast majority of the world's personal computers. In the Tech Titans series, delve into the history of these companies, get to know the products and people associated with them, and consider the ways they are changing our world. Book jacket.