Root-Cause Analysis: New AI Platform Accounts Not Converting to Production Workloads
Company: Google
Role: Product Manager
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Other
You own an AI platform. New sign-ups have been rising for a while, yet production usage over the same stretch has not grown. How would you work out why?
```hint Look between the two numbers
Production usage sits several steps after account creation. Lay out what a new account has to do before it sends production traffic, then compare where recent cohorts stop with where earlier cohorts stopped.
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### Clarifying Questions
- What counts as production usage: live traffic from deployed applications (for example, calls on production keys or paid projects), or any activity after sign-up, such as trying prompts in a playground?
- Is the platform built for developers calling an API, for business users working in a no-code interface, or for both?
- Is the flat line the number of accounts with production usage or the total production volume, and for how long have sign-ups and production usage diverged?
- Did anything change around the time sign-ups started climbing, such as a campaign, a launch announcement, free credits, a new sign-up path or a pricing change?
### What a Strong Answer Covers
- A precise definition of production usage, and whether the flat metric counts accounts or volume.
- Checks that the gap is real rather than a tracking, attribution or definition artifact, with cohorts compared at equal age.
- A breakdown of production usage into new accounts converting, existing accounts growing or shrinking, and accounts lost.
- The path from sign-up to sustained production traffic, segmented by acquisition source, customer type and use case to find where and for whom it breaks.
- Hypotheses checked in a sensible order, a most likely cause, and the fix and metric that would confirm it.
### Follow-up Questions
- You find that nearly all the extra sign-ups came from a free-credits promotion. Is flat production usage still a problem, and what would you change?
- New production accounts are growing, but production volume per account is falling. What does that suggest, and where do you look next?
- How long after sign-up should you wait before judging whether a cohort reached production, and how would you choose that window?
Overview: A product analytics case about an AI platform whose sign-ups keep rising while production usage stays flat. It tests whether a product manager can define production usage, rule out measurement artifacts, break down the path from new account to live workload by cohort and segment, and test root-cause hypotheses in a sensible order.