Now way days people want to accurate planning of building, constructions and product etc.
Autodesk provide good technology release thats called AutoCAD, We can easy to draw 2 dimension and three Dimension(3D) drawing, It helps to before we construct building first we develop the building on AutoCAD software, if we have any correction on construction we are simply changes the correction on computers.
This software helps reduce the cost, peoples easily understand plan, Autodesk software is open source for students, Every year release latest built in AutoCAD.