This book includes experiences of Industry 4.0 technology adoption among companies located in 14 countries around the world, including Brazil, China, Finland, France, Hungary, India, Iran, Italy, Lithuania, Poland, Russia, Serbia, the US, and the UK. Each chapter briefly describes the context and the digitalization policy adopted in the country, and highlights the barriers, drivers, and opportunities that companies identified in relation to Industry 4.0. The aim of this chapter is to summarize commonalities and differences of factors influencing Industry 4.0 in SMEs nationally and attempt to aggregate the Industry 4.0 opportunities, leading to further digitalization chances for SMEs.