ITSM, or IT Service Management, is a set of practices and frameworks designed to effectively manage and deliver IT services within an organization. It focuses on aligning IT processes, people, and technology with the needs of the business to ensure efficient service delivery, customer satisfaction, and continuous improvement. ITSM encompasses various disciplines such as incident management, change management, problem management, and service level management, all aimed at optimizing IT service quality, reducing downtime, and maximizing operational efficiency.