Which of the following is a fundamental part of Puppet's event management?

Puppet's event management fundamentally revolves around managing configurations and tracking changes. This aspect is crucial because Puppet operates on the principle of ensuring that the infrastructure remains in the desired state defined by configuration files or manifests. By managing configurations, Puppet automatically applies the necessary changes to the system, detects any deviations from the desired state, and reports those changes as part of its event management process.

Tracking changes is vital for maintaining compliance, audits, and understanding the history of infrastructure modifications. Puppet facilitates visibility into what has changed and when, which is essential for troubleshooting, governance, and ensuring that systems conform to expected configurations.

The other options, while related to event management in their own contexts, do not capture this fundamental aspect as effectively as configuration management and change tracking do. Custom scripting could introduce unnecessary complexity and is not a standardized part of Puppet's event management. Handling events strictly through command-line interface commands limits the automatic and declarative nature of Puppet, which is designed to operate with minimal manual intervention. Allowing human intervention can bring about operational risks and inconsistencies, which Puppet aims to minimize by automating configuration management and tracking changes systematically.