Your question is Product Experience and Improvement. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
What kinds of products do you use regularly? What would you improve about one of them, and how would you confirm the improvement worked (A/B test: set the experiment goal, design the experiment, evaluate the results)?
Asked in ByteDance's first-round interview. Likely follow-ups: how would you design the A/B experiment, and how would you evaluate the results? Answer using a specific product you know well, focusing on the user problem, the proposed improvement, the experiment design, and how you would judge the results.