User Experience
Edge Case
Definition
An edge case is a rare or extreme scenario that falls outside typical glossaryUser BehaviourUser behaviour refers to how users interact with a product, including actions, patterns, and decision-making processes.Open glossary term.
In practice
Considered during design and development to ensure robustness.
The reality
Often ignored until they cause issues in production.
Plain English
Unusual situations that still need handling.
FAQ
Common questions
A few practical answers to the questions that usually come up around this term.
What is an edge case?
A rare or extreme scenario.
Why are edge cases important?
They prevent unexpected failures.
When should they be considered?
During design and development.
What is a common mistake?
Ignoring them.
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