What key concept in Problem Management identifies the fundamental cause of issues?

The key concept in Problem Management that identifies the fundamental cause of issues is Root Cause Analysis. This process is pivotal in Problem Management because it focuses on understanding the underlying reasons why an incident has occurred, rather than just addressing the symptoms or effects of the incident.

Using Root Cause Analysis, IT teams can systematically investigate and identify the source of a problem, which then allows for effective and lasting solutions. By pinpointing the root cause, organizations can prevent future incidents related to the same issue, thus enhancing overall service quality and operational efficiency.

In the context of IT Service Management, accurately addressing the root causes also helps reduce the impact on business services, aligning IT capabilities more closely with the needs of the organization. This proactive approach not only resolves current issues but also contributes to continuous improvement in IT service processes.

Other options, such as assessment, work in progress, and known errors, do not specifically focus on identifying the fundamental causes of issues. Instead, they are related to different aspects of IT service management processes and practices, lacking the distinct problem identification focus that Root Cause Analysis offers.