Conceptual design is the process of creating a high-level representation or visualization of an idea or concept. It typically involves brainstorming, sketching, and creating rough drafts to flesh out an initial concept, and may involve collaboration between designers and stakeholders to refine and iterate on the initial idea. Conceptual design is a specialized skill that requires a creative and analytical mindset, as well as an ability to think abstractly and communicate complex ideas clearly. It is often used in fields such as architecture, industrial design, and software development, and plays a crucial role in the early stages of the design process.