What caused the sudden 35% decrease in ad click-through rates for Kwai's livestream content yesterday?

Introduction

A sudden 35% decrease in ad click-through rates for Kwai's livestream content is a critical issue that demands immediate attention. This significant drop could have far-reaching implications for revenue, user engagement, and overall platform performance. I'll approach this problem systematically, focusing on identifying the root cause, validating hypotheses, and developing both short-term fixes and long-term strategies to prevent future occurrences.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking this could be a recent change. When exactly did you first notice this decrease?

Why it matters: Pinpointing the exact timeframe helps narrow down potential causes. Expected answer: Within the last 24-48 hours. Impact on approach: A very recent change might indicate a technical issue or sudden external factor.

• Considering the specificity of the decrease, I'm wondering about the data reliability. Has there been any change in how we measure or report click-through rates recently?

Why it matters: Ensures we're not chasing a data anomaly instead of a real problem. Expected answer: No recent changes to measurement or reporting systems. Impact on approach: If there were changes, we'd need to investigate data integrity first.

• Given the focus on livestream content, I'm curious about content diversity. Has there been any significant shift in the types of livestream content being offered in the past few days?

Why it matters: Content changes could directly impact user engagement and ad relevance. Expected answer: No major shifts in content types or creators. Impact on approach: If there were changes, we'd focus more on content strategy and creator relationships.

• Considering potential technical issues, have we rolled out any updates to the ad serving system or user interface in the last week?

Why it matters: Recent updates could introduce bugs or unintended consequences affecting ad performance. Expected answer: A minor update was pushed to production two days ago. Impact on approach: This would shift our focus to thoroughly examining the recent update for potential issues.