Description

A user says they were charged, but their order never appeared. Customer Support reports that checkout is failing. A metric suddenly starts behaving strangely.

What can you do as a Product Manager besides passing the problem on to the engineering team?

This book teaches you how to use logs, Kibana, and the fundamentals of observability to investigate what actually happened behind your product — without needing to know how to code.

You’ll start from zero: what a log is, what information it contains, and why logs can become one of your most valuable sources of evidence when something goes wrong. Then you’ll learn how to use Kibana and KQL to search through millions of events, filter out the noise, and find the exact operation you need to investigate.

But the goal isn’t to learn a tool.

The goal is to learn how to investigate.

You’ll learn how to follow identifiers such as user.id, order.id, payment.id, and trace.id to reconstruct an operation across different systems. You’ll compare successful and failed operations, identify the first unexpected behavior, and understand the crucial difference between an error, a consequence, and a possible cause.

You’ll also learn how to move beyond a single user and answer bigger Product questions: Is this happening to other users? When did it start? Which segments are affected? What is the actual impact?

By the end of this book, you’ll be able to:

• Use Kibana to investigate real product incidents.
• Search and filter logs with KQL.
• Find a specific user operation among millions of events.
• Follow an operation using IDs, timestamps, and traces.
• Reconstruct what happened before, during, and after a problem.
• Compare successful and failed operations.
• Detect patterns and estimate the scope of an incident.
• Separate facts and evidence from correlations and hypotheses.
• Bring clearer, more actionable information to engineering teams.

No previous experience with Kibana, Elasticsearch, logs, or observability is required. And you don’t need to know how to code.

This book won’t turn you into a developer, SRE, or observability specialist. It is written specifically for Product Managers and Product Owners who want to gain technical autonomy without losing their Product focus.

The goal isn’t to be able to say:

“I found the bug.”

It’s to be able to say:

“I found the operation. This is what happened, this is where the behavior first became unexpected, this appears to be the scope, and here is the evidence.”

That changes the conversation with your engineering team completely.