The document is an introduction to cloud computing presented by Tony Pearson, an IBM Senior Managing Consultant. It discusses why companies are interested in cloud computing, including benefits like innovation, growth, flexibility and cost savings. It explains how cloud computing evolved from concepts like time-sharing, grid computing and application service providers. The document defines cloud computing and contrasts traditional IT approaches to capacity versus cloud services that dynamically match capacity to usage. It outlines the major players in cloud computing revolution and how cloud computing enables new business models by providing faster, simpler and cheaper IT services from a dynamic infrastructure.