Computer-Aided Design (CAD) is a technology that uses software to create precise drawings and models of physical objects. It is widely used in various fields, including architecture, engineering, and manufacturing, to visualize and modify designs before they are built. CAD allows designers to produce detailed 2D and 3D representations, making it easier to communicate ideas and collaborate with others. CAD software often includes tools for drafting, modeling, and simulation, enhancing the design process's efficiency and accuracy. Popular CAD programs, such as AutoCAD and SolidWorks, enable users to create complex designs and analyze their performance, ultimately leading to better products and reduced development time.