This document discusses Industry 4.0 and its key technologies including the Industrial Internet of Things, cyber-physical systems, and cloud computing. It outlines the benefits of Industry 4.0 such as vertical and horizontal integration, customization, and optimization. Changes due to Industry 4.0 include its Reference Architecture Model (RAMI 4.0) and European Union programs supporting factories of the future. While some Brazilian industries are starting to adopt digital technologies, most remain focused on earlier industrial revolutions.