CATIA®, Computer Aided Three Dimensional Interactive Application, is a product by Dassault Systems which works on unique 3DEXPERIENCE platform. CATIA® software suite incorporates CAD, CAM, and, CAE capabilities. It is best suited for Mechanical Engineering aspirants, as it enables them to create 3D parts from 3D sketches along with offering solutions to shape design, style, surface workspace, and visualize shapes. These tasks done by CATIA® let the users create, modify, and support complicated shapes.
Source: https://www.multisoftvirtualacademy.com/cad-cam-cae/catia-online-training