This guide is designed for software developers, project managers, business analysts and user interface designers, and does not require a background of human factors or usability. This presents a method, a practical design structured, customer-centered that encourages innovation yet helps you make sure your final design is still easy to use. This assumes that people are always going to choose a simple way to achieve their goals through a complex way, because it focuses on the customer and explains how to design e-commerce site that ordinary people can use. Practical techniques are presented to develop and prototype design of the site, starting with the design of paper and then moved to slide the electronic or interactive prototypes. The book then discusses methods for testing the usefulness of good design by domain experts and customer representative.