Problem management is an area of IT Service Management (ITSM) aimed at resolving incidents and problems caused by end-user errors or IT infrastructure issues and preventing recurrence of such incidents.
In this context, an incident is an event that disrupts normal operation. A problem is an underlying issue that could lead to an incident.
Problem management can either be reactive (problem-solving when an error occurs) or proactive (identifying issues and potential risks before they become problematic).
See also: incident management