Computer-Aided Design (CAD) uses computer software to assist the process of creation, modification, development, optimization, and analysis. Computer-aided designers in the fashion industry use computer software to create sketches and other designs used to create clothes, accessories, shoes, intimate apparel, and more.
Tech packs are a complete collection of data covering all of the specifications of a garment. The tech pack essentially serves as a technical blueprint for the garment. The best tech packs include images, fabric details, accessory details, label information, positioning, and meticulous measurements. This helps reduce mistakes and improve communication, making the production process between the designer and manufacturer easier to understand and follow, resulting in less mistakes. They also tend to reduce lead times and turn arounds. They are not required, but help with product development.