Manufacturers must begin to transform existing business processes and fundamentally rethink how they create, operate, and service smart connected products in the era of Industry 4.0. This book is virtually a one volume encyclopedia on industrial Internet of things, the author explain its evolution, M2M data communication, real time business application and business use case as well touch base the technology prerequisite along with high level overview of implementing IIoT to achieve smart manufacturing focus on improving existing processes to increase efficiencies, and concludes with a view on careers in industrial automation.