It is usually the engineers who use CAD software. In the most layman terms CAD is the software that works on computer aided designs. This is the technology that most designers, especially those in engineering and real estate fields use in order to obtain high quality, photo realistic designs.
In earlier days, people would use the traditional hand drawn designs, tt would not only be time consuming, but would also incur losses in case of even the most minor error Since this is a design that is done by hand, even a slight error would mean recreating the entire design. Using CAD software eliminates these mistakes. And if by chance such mistakes do occur than the time taken to rectify such errors is reduced to a large extent.
CAD software can be used in a lot of fields like structural, electrical, architectural cad services, mechanical and many more. When compared to other softwares, CAD is a software that is comparatively very easy to use and with practice, one can get high end and professional designs out of it.
It is better to CAD Outsourcing services since the amount of investment that you would need to make in terms of hiring a new engineer who is well versed in CAD, training him or her to your requirements, giving him the software and the system to work and ensuring a steady flow of work, would, in long run, be much more costlier than outsourcing the CAD services.