A product is anything that can satisfy customer needs or wants in a market. Product design is the process of imagining, creating, and iterating products to solve user problems through empathizing with people, defining the problem, ideating solutions, building prototypes, and testing solutions. There are three levels of a product - the core value or benefit, the actual product, and the augmented aspects. Good product design has five essential properties - utility, reliability, usability, pleasurability, and desirability.