CAE (Computer-Aided Engineering) software uses advanced tools to simulate, analyze, and optimize product performance under real-world conditions, reducing physical prototypes and speeding up development. Key types include Finite Element Analysis (FEA) for stress/structural analysis, Computational Fluid Dynamics (CFD) for fluid flow, Thermal Analysis for heat transfer, and Multi-Body Dynamics (MBD) for motion. Popular examples include Ansys, Abaqus, and software from Autodesk, Siemens, and Dassault Systèmes, used across industries like automotive, aerospace, and electronics to validate designs virtually.