Which tool allows you to monitor your application during testing without redeploying any code?

The correct choice is Cloud Debugger Logpoints because it allows developers to set breakpoints and gather information about the application’s behavior without requiring a redeployment. Logpoints enable you to log specific variables and states at runtime while the application is running, providing insights into its operations during testing. This dynamic nature allows developers to troubleshoot issues immediately, making adjustments to monitoring or logging of specific data points without interrupting the running application.

Cloud Debugger Snapshots, while useful for viewing the state of application variables at specific points in time, still require the application to be redeployed to establish the snapshots effectively. Cloud Trace primarily focuses on analyzing and visualizing application performance by providing latency data and traces for request paths, which does not involve real-time debugging. Cloud Monitoring provides metrics and logs at a higher level, giving insights into system performance rather than specific application code behavior during testing. Thus, Logpoints stands out as the best tool for real-time monitoring during tests without code redeployment.