This book sheds new light on component surfaces and the scientific fundamentals of their creation, characterization, and application. The book also provides a new interdisciplinary perspective on the topic, studying component surfaces with a multiscale approach and linking fundamental and applied research. The book builds on the success of the coordinated research project funded by Deutsche Forschungsgemeinschaft (DFG) from 2011 – 2023: the CollaborativeResearch Center CRC 926 “Microscale Morphology of Component Surfaces (MI-COS)”, in which, over the years, 100+ researchers have co-operated at the University of Kaiserslautern, Germany, and affiliated institutes, yielding 500+ scientific papers in journals from different fields of science and engineering. Divided into 2 main parts, the book starts with an introduction to the concept of Manufacturing-Morphology-Property (MMP) Relationships and dives into the fundamentals and technologies, including topics such as the geometrical, microstructural, and chemical characterization, indentation, and scratching on the nanoscale, micro milling and micro grinding, cryogenic machining, cold spraying, and additive manufacturing. In the first part, readers discover more about the interactions between particles and surfaces, the interrelationship of manufacturing, surface morphology and properties of titanium, the influence of manufacturing and load conditions on the phase transformation and fatigue of austenitic stainless steels, and the influence of surface morphology on fatigue and tribological behavior of Transformation-Induced-Plasticity (TRIP)/Twinning-Induced Plasticity (TWIP) Steels. The second part of this book is devoted to the applications of component surfaces, covering topics like the manufacturing of areal material measures, MMP relationships for rotating shaft sealing systems, the influence of the surface morphology on rolling bearing life under mixed lubrication, MMP relationships for chain joints, and MMP for biofilms. Scientists and engineers who deal with the influence of surfaces on macroscopic properties of components and who are interested in designing and manufacturing these surfaces to obtain desired component properties will understand the appeal of this work. Given its interdisciplinary breadth, the book also appeals to scholars and professionals in the fields of mechanical engineering, process engineering, and physics.