Which of the following best describes patch management?

Patch management refers to a systematic approach to managing updates and fixes for software systems and applications. This includes the identification, acquisition, installation, and verification of patches or updates to software programs. The primary goal of patch management is to ensure that software is kept up to date, reducing vulnerabilities that could be exploited by attackers and improving overall system performance and stability.

A systematic approach is critical because it helps organizations maintain control over their software environment, ensuring that all systems are updated in a timely manner without introducing additional risks. This can involve developing policies and procedures for regular updates, monitoring for available patches, and testing patches before deployment to ensure compatibility and effectiveness.

In contrast, the other options either describe irrelevant processes or are specific to other areas of IT management. For example, the deletion of outdated software does not address the proactive approach that patch management embodies, and installing antivirus software or reformatting hard drives are methods that do not directly relate to the regular maintenance of software updates and fixes.