UCD, sometimes called usability engineering, is a structured approach to producing a Web site that involves users throughout the entire design process to create a Web site that works. UCD involves several methods, each applied at appropriate times, including:

• defining business and user goals and objectives
• gathering requirements
• developing and testing prototypes
• evaluating design alternatives
• analyzing usability problems
• proposing solutions
• testing a site with users

For more information about UCD, visit What is User-Centered Design?

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Usability testing

Usability testing fits in as one part of the user-centered design process. In a usability test, representative users try to find information (or use functionality) on the Web site, while observers, including the development staff, watch, listen, and take notes. The purpose of a usability test is to identify areas where users struggle with the site and make recommendations for improvement.

Usability testing is typically best implemented after you've completed earlier steps in the UCD process. Its better to clearly define problems, goals, and objectives before testing your site.

To learn more about usability testing, visit Learn About Usability Testing.