Card sorting shows how users perceive certain terms and how they group information. Content from websites can be structured so that users understand the setup intuitively and find the searched information with higher probability. A distinction is made between the classic card sorting (open / closed) and the reverse card sorting (Finding information in a given hierarchy).
Card Sorting is quick and easy to process and the results are significant. Either digitally supported or with pure paper cards the method is applicable without big effort. Depending on the variation of alternatives, ideas and approaches can be worked collaboratively.