CAD (Computer-Aided Design) is a technology that uses software to create precise drawings and models for various industries, including architecture, engineering, and manufacturing. It allows designers to visualize their ideas in 2D or 3D formats, making it easier to modify and improve designs before production. With CAD software, users can simulate real-world conditions, test functionality, and analyze performance. This technology enhances collaboration among team members and streamlines the design process, ultimately saving time and reducing costs in project development.