In the not-so-distant past, the design process was exceedingly resource intensive. It took a lot of time, expertise, and effort to draft designs on paper. Those paper designs were then rendered into prototypes, which often failed and had to be reimagined and reproduced until the design was successful. The entire process was lengthy and expensive.
Clearly, this process was ripe for innovation. Then 3D CAD came along and did just that.
Now, automation has also joined the scene. With CAD customization and design automation becoming more common, the entire design process looks and feels completely different.