The ability to design industrial or consumer products that meet the requirements of the customer is essential for company survival in a competitive market place. The complexity of many of today'||'''s products, together with intense pressure to reduce cost and time to market means that companies must get the design right at the first attempt. This book introduces some of the methods that companies employ to minimise the chance of unpleasant surprises after the product has been launched. After describing the iterative and interactive nature of design, the book examines the information that designers need before they can set about the task of defining a commercially successful product, and the problems associated with communicating this information within a company.