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GLOSSARY

Edge Case

UX Design

What is an Edge Case?

An edge case in UX design refers to a rare or extreme usage scenario that occurs outside of normal operating parameters. It represents unusual user behaviors, unexpected input values, or uncommon situations that might break or severely impact the user experience.

Why are Edge Cases Important?

Edge cases help designers create more resilient and inclusive designs. While they may affect a small percentage of users, failing to address edge cases can lead to frustrating experiences, accessibility issues, or complete system failures for these users.

When to Consider Edge Cases

Consider edge cases during the initial design phase and user flow mapping. Pay special attention when designing forms, user inputs, search functionality, or any feature where users can provide varying types of data or take unexpected actions.

How to Handle Edge Cases

Begin by identifying potential edge cases through user research and testing. Design clear error states and feedback mechanisms. Create graceful fallbacks and recovery paths. Test with diverse user groups and extreme scenarios to ensure your design remains robust and usable.

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