Chapter 4. Involving Customers with Iterative Design

The primary principle of customer-centered design is know your customers, as discussed in Chapter 3 (Knowing Your Customers: Principles and Techniques). Now you will learn three related principles: (1) keep the customers involved, (2) conduct rapid prototyping, and (3) evaluate your designs. Omitting any of these principles from your design processes is a major risk. Studies by the Standish Group International have attributed many of information technology’s frequent project failures to a lack of end-customer input.

Iterative design addresses this problem by calling for setting measurable goals and repeatedly refining and testing design prototypes with customers until the final design meets or ...

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