Alpharetta has Computer Aided Design (CAD) services, also known as computer-aided design and drafting (CADD). Earlier, draftsmen would manually draw up plans for construction of various goods, such as cars, machines, ships, aeroplanes, as well as building plans for architects. The Computer Aided Design services essentially seeks to modify this process by the use of computer technology. There are specialzied software for drafting and drawing up these designs. A number of different processes can be carried out, such as streamlining design processes; drafting, documentation, and manufacturing processes. Some of the services that may be offered in Alpharetta include 3D Modeling, CAD Design to 2D Drafting and CAD Drawings. The personnel here are trained in both design and software use. Usage of technology speeds up and fine-tunes the process, minimizing errors. The idea is to convey information according to the intended application, as manual drawings would. One should choose the outfit based on parameters such as cost effectiveness, quick output, ability to respond to changes in client demands, good past record and co-ordination among various project disciplines.