This book presents an introduction on the fundamentals of arc welding and analysis of its applicability in various spheres. Since the invention of arc technology in 1870s and its early application in welding lead for manufacturing lead-acid batteries, developments in arc welding across the twentieth and twenty-first centuries have prompted this processing method to be applied to a wide spectrum of industries. Advancements have led arc welding to become one of the most efficient techniques in metals and alloys joining. The purpose of this book is to present prevalent methodologies and techniques which have been studied, developed and applied in industries or researches. State-of-the-art development intended at advancing technologies have been discussed covering topics like weldability, technology, automation, modelling, and measurement. It aims to offer efficient solutions to several applications for engineers and researchers associated with arc material processing.