A product is an item such as a car, a consumer item, a service, or something that people can use over time. Products and services have to be designed, developed, marketed, enhanced, and eventually replace new products. In a book on project management, you might wonder why product management appears here. First, product and project management have much in common. Second, the development of a product requires a project effort. Third, many projects such as business-toconsumer E-Business involve products.