What is it?
It’s a visual model that represents the categorisation and flow of information across and within an application to meet customer expectations and goals.
Why do it?
Do it to understand the best way to present information to customers to help facilitate achieving their goals.
When to do it?
Do it continuously, throughout the product development life cycle.
How to do it?
Start with the macro information design—that is, the overall structure of your information flow on your site or application and then drill down to the micro page-level information design.
• Card sorting (macro): Write the major content topic areas ...