Book excerpt: "This research book is a novel, innovative and adequate reference that compiles interdisciplinary perspectives about diverse issues related with Industry 4.0 and Smart Cities on different ways about Intelligent Optimisation, Industrial Applications on the real world, Social applications and Technology applications with a different perspective about existing solutions. Chapters report research results improving Optimisation related with Smart Manufacturing, Logistics of products and services, Optimisation of different elements in the time and location, Social Applications to enjoy our life of a better way and Applications that increase Daily Life Quality. This book is organised into three scopes of knowledge: (1) applications of Industry 4.0; (2) applications to improve the life of the citizens in a Smart City; and finally (3) research associated with the welfare of the working-age population and their expectations in their jobs correlated with the welfare - work relationship"--