A non-commercial look at the efficiencies of mechanized, automated, and robotic welding, this chapter from the Welding Handbook, Ninth Edition, Volume 1, was written by experts from some of the most successful welding equipment manufacturers and users: Tower Automotive, ABB Flexible Welding Control, KOHOL Systems, Fanuc Robotics-North America, Trek Bicycle Corp., Johnson Controls, Detroit Center Tool, Panasonic Factory Automation, and The Lincoln Electric Co. Covers system components and operating characteristics for arc and resistance welding.