​CAD (Computer-Aided Design) involves drawing parts (in 2D, 3D, or 2.5D) using dedicated software, which can then be saved as a digital file.
The most well-known formats are G-code, ISO, and DXF.
CAM (Computer-Aided Manufacturing) involves using one of these digital files to perform machining operations on the material by interpreting these digital files and controlling a computer numerically controlled (CNC) machine accordingly.
Kay Lancelot, Mach3, and Mach4 are CAM software packages. GALAAD is a solution that integrates both CAD and CAM software.