Why are Prime Air delivery notifications failing for 30% of orders?

Introduction

Prime Air delivery notifications failing for 30% of orders is a critical issue that directly impacts customer satisfaction and trust in our service. This analysis will systematically identify, validate, and address the root cause while considering both immediate and long-term implications for our Prime Air delivery system.

I'll approach this problem by first clarifying key details, ruling out external factors, and then diving deep into our product ecosystem, metrics, and potential internal causes. My goal is to pinpoint the root cause and propose a comprehensive solution strategy.

Step 1

Clarifying Questions (3 minutes)

• Looking at the failure rate, I'm wondering about the timeline. Has this 30% failure rate been consistent, or did it spike recently?

Why it matters: Helps determine if this is a sudden issue or a long-standing problem. Expected answer: The failure rate spiked in the last week. Impact on approach: A recent spike would focus our investigation on recent changes or events.

• Considering user segments, are we seeing any patterns in the failures? For instance, is it more prevalent in certain geographical areas or for specific types of orders?

Why it matters: Identifies if the issue is localized or widespread. Expected answer: Failures are distributed across all regions and order types. Impact on approach: A uniform distribution would suggest a system-wide issue rather than a localized problem.

• Thinking about the notification process, at which stage are these failures occurring? Are notifications not being sent, or are they not being received by customers?

Why it matters: Narrows down the part of the system where the failure is occurring. Expected answer: Notifications are being sent but not received by customers. Impact on approach: This would focus our investigation on delivery mechanisms rather than notification generation.

• Considering recent changes, have there been any updates to our notification system or related infrastructure in the past month?

Why it matters: Helps identify if a recent change could be the culprit. Expected answer: A new notification service was implemented two weeks ago. Impact on approach: This would make the new service a prime suspect in our investigation.