Cloud Trace
What is it
Cloud Trace is a distributed tracing storage and analytics product that enables correlation of multiple actions, requests and logs to a single trace ID.
When to use it
Use Cloud Trace to correlate requests between separate backend services to a single originating action, such as an end-user request or automatically triggered job.
If you have used the Cloud Runner SDK, your service should already have tracing configured.
How to learn it
Read the documentation.
Especially read the Trace Console documentation to learn how to browse trace information, and take extra care to learn how to view trace data in the Logs Explorer.
Definitely make sure to have understood how to work with Cloud Trace before going on-call, as it will be part of your bread and butter tools for diagnosing and resolving issues in production.