CATIA is a powerful software application used for computer-aided design (CAD), computer-aided manufacturing (CAM), and computer-aided engineering (CAE). Developed by Dassault Systèmes, it allows engineers and designers to create 3D models and simulations of products, making it easier to visualize and test designs before they are built. This software is widely used in industries like aerospace, automotive, and industrial machinery. One of the key features of CATIA is its ability to handle complex geometries and large assemblies, which is essential for designing intricate parts and systems. It also supports collaboration among teams, enabling multiple users to work on the same project simultaneously. This makes CATIA an essential tool for modern engineering and product development.