Why structure matters
In a structured interview, the employer standardizes job-related questions and scoring. That makes candidates easier to compare and reduces the room for each interviewer to invent a different test.12
STAR helps you organize an example from your own experience. It can remind you to explain what you did and what happened, but it does not determine the employer's questions or scoring.
Breaking down STAR
STAR on a resume
Do not force four labeled parts into a bullet. A useful line usually needs a clear action, the context needed to understand it, and an outcome when one is known. Situation and task often live in the role title or surrounding bullets.
These are fictional examples. Only add details like these to your own resume if they are true.
Weak: "Worked on the customer support team handling inquiries."
With more detail: "Handled customer escalations and created a troubleshooting guide that helped the support team resolve repeat billing issues."
The role supplies the context. The revision explains the action, identifies the problem, and names a useful outcome. A verified measure could add detail, but the sentence does not need an invented number.