Diagnose a drop in DAU

Last updated: May 13, 2026

Quick Overview

The activation rate dropped by 15% this week. Walk through your investigation process.

Booking.com
Product / Decision Making
Data Scientist
Booking.com
May 13, 2026
Data Scientist
Technical Screen
Product / Decision Making
Medium

37

1

3,026 solved


The activation rate dropped by 15% this week. Walk through your investigation process.

Booking.com asks this during the Technical Screen to assess your product sense and structured thinking. They want to see how you define the problem, identify the target user, prioritize features, and measure success.

What the Interviewer Expects
  • Apply a structured framework for product thinking (user, problem, solution, metrics)
  • Segment users and identify differentiated needs
  • Prioritize features using a clear framework (RICE, ICE, impact vs effort)
  • Define comprehensive success metrics across the user funnel
  • Consider competitive dynamics and market positioning
Key Topics to Cover
Product strategy and vision
Platform and network effects
Data-informed decision making
Go-to-market strategy
User segmentation and personas
Success metrics and KPIs
How to Approach This
  1. Start with the user. Who are they, what problem do they have, and what is their current workaround?
  2. Use a prioritization framework: impact vs effort, RICE scoring, or ICE scoring.
  3. Define success metrics using the AARRR framework: Acquisition, Activation, Retention, Revenue, Referral.
  4. Consider second-order effects. A feature might boost short-term engagement but hurt long-term retention.
Possible Follow-up Questions
  • How would you sequence the rollout across different user segments?
  • How would you validate this idea before committing engineering resources?
  • What competitive response would you expect and how would you prepare?
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Browse Product Questions
Sample Answer
Problem Framing

The immediate issue is a 15% drop in the activation rate of users on Booking.com this week. To scope this problem, I would first analyze the time frame of this drop—was it sudden or gradual? I would s...

User & Market Context

The primary users affected by the activation rate drop are new users who have signed up for Booking.com in the last week. For this demographic, factors such as ease of use, trustworthiness, and the ab...


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