This question inquires about a situation where you participated in a decision regarding a product, service, or project, and you championed the addition of a specific feature. The interviewer is interested in assessing your ability to advocate for your ideas and vision, your persistence and negotiation skills, as well as your approach to handling opposition or challenges. When responding to this question, you should: Outline the context and give a brief summary of the project or product. Identify the feature you firmly believed was essential and explain your reasons for that belief. Detail the opposition or challenges you encountered. Elaborate on the measures you took to promote your perspective, which might include evidence, research, or arguments you presented. Reflect on the outcome, even if it was not favorable; this will demonstrate your ability to advocate for your ideas and the insights you gained from the experience.