Computer Aided Drafting is used to design, develop and optimize products, which can be goods used by end consumers or intermediate goods used in other products. CAD is also extensively used in the design of tools and machinery used in the manufacture of components, and in the drafting and design of all types of buildings, from small residential types to large commercial and industrial structures.
CAD is mainly used for detailed engineering of 3-D models and/or 2-D drawings of physical components, but it is also used throughout the engineering process from conceptual design and layout of products, through strength and dynamic analysis of assemblies, to definition of manufacturing methods of components.
CAD has become an especially important technology, with benefits, such as lower product development costs and a greatly shortened design cycle. It enables designers to lay out and develop their work on screen, print it out and save it for future editing, saving a lot of time on their drawings.