Parametric modeling means every model is controlled by dimensions, constraints, and relationships.
Why It's Useful
Before parametric modeling, altering a 3D object frequently required starting from scratch or manually pushing every connected piece to fit.
Common Use Cases
Parametric modeling is widely used in many sectors for exact, manufacturable design.
Eg. Mechanical, Aerospace, Robotics and more..
Advantages
Easy modifications, Faster design changes, Better design intent, Reusable models