Auto stand for Automatic and CAD Stand for Commercial Computer Aided Design. Auto CAD is a Drafting Software which was developed by the Autodesk (American Multinational Software Corporation). First Version of Auto CAD released in 1982 for Micro Computer with complete Graphics Control. Auto CAD use for Architecture, Mechanical, Electrical and Electronic Drafting and Modeling. Auto CAD provide facilities of 2D (Two Dimensional) Drawing and 3D (Three Dimensional) Drawing or Modeling. Auto CAD 2017 features also provides facilities of Camera, Rendering and Lighting. 2D (Two Dimensional) is flat / geometry drawing called Drafting and Dimensional) Drawing is a structure layout of a Draft called Modeling.