What type of logs is critical for testing and implementing change policies?

The correct choice focuses on application logs, which are essential for testing and implementing change policies. Application logs provide insights into the functioning and performance of specific applications, making it easier to track changes that have been made as well as any issues that arise from those changes. By analyzing these logs, organizations can evaluate the effectiveness of new implementations and assess whether changes meet the desired objectives.

When testing new policies or modifications in an application, having detailed records of application events, errors, and user interactions is crucial. Application logs help in identifying any discrepancies or unexpected results resulting from changes, ensuring that the new policies not only function correctly but also enhance overall system performance.

In contrast, configuration logs primarily document the changes made to the system or application settings rather than the impact of those changes. System logs capture events related to the operating system and hardware operations, providing a broader overview but lacking the detail needed for specific application-related changes. Backup logs are focused on data recovery and do not provide relevant information regarding the performance or testing of application changes.