Welding is often a cost-effective way to fabricate. It does not require overlapping materials, so it eliminates excess weight caused by other fastening means. Fasteners do not have to be bought and kept in inventory. Welding also can reduce costs associated with extra elements, such as angles fastened between parts.

Moreover, welded joints distribute operating stresses evenly. However, design of a welded joint significantly affects the welding processes that are used. Many design options permit excellent welding performance. Nevertheless, designers who are unaware of the range of technology and methods available may fail to realize welding's potential.

Just as joint design affects welding processes, so must the process be considered when designing a joint. Designs must account for the heating produced by welding, and accessibility for the various processes involved is important as well.