Critical parts of user-centered design, such as prototyping and usability testing, are often misunderstood and may appear to increase the cost of a Web project. But these design methods actually have their legitimacy in cost effective development. Though they add a few percent to the development expenses up-front, they can reduce the cost of making changes due to unanticipated client and user requirements by 10 to 100 times.
- Prototypes allow us to show fast results to the client
- Prototyping legalizes experimentation and many revisions because it’s inexpensive to alter
- Prototypes are easy to grasp because they simulate how the final site, tablet or mobile app will work
- They can work as a common reference, and bring a disparate team together
- Users, developers and the clients will focus on content, structure and functionality, and will not be distracted by the details of graphic design
- Prototypes make it possible to get a formal approval of the design from both programmers and the client before you proceed to the development stage
- They make it possible to start usability testing at an early stage in the development process