Concept design is a key stage in the process of developing a product, service, or solution. It involves creating the initial concept or idea for the design, considering various factors such as user needs, functionality, aesthetics, and technical feasibility. Concept design helps to visualize and communicate the overall direction and vision for a project before moving into the detailed design phase. This stage allows for exploration, iteration, and refinement of ideas, enabling designers and stakeholders to align their understanding and expectations before investing further resources and effort into the development process.