Tell me about a marketing campaign you worked on. What was the goal and what happened?

Note: Choose a campaign where you can quote numbers. Marketing interviews separate people who ran campaigns from people who described them, and numbers are how.

Structure it as:

• The business objective. Not "awareness" but what awareness was for — entering a new segment, supporting a launch, or reducing cost per acquisition ahead of a funding round.
• The audience and the insight. Who you targeted and what you understood about them that shaped the creative. This is where marketing judgement shows.
• Channels, budget, and your role. Be honest about whether you owned it or contributed.
• The result against the target. Reach, engagement, leads, conversions, cost per acquisition, or revenue — and what you would change.

If it underperformed, that can be the better story — provided you can explain what you learned and what you did differently next time. Interviewers are wary of candidates whose every campaign succeeded.