The primary responsibilities of a Service Level Manager (SLM) are centered on the lifecycle of service agreements. This includes negotiating Service Level Agreements (SLAs), ensuring the services offered are documented in a service catalogue, and continuously analyzing and reviewing service performance against the agreed-upon levels. While the SLM provides critical input into the change management process, specifically on how a proposed change might affect existing service levels, the ultimate responsibility for assessing the full impact of a change (including technical, financial, and business risk) lies with the Change Management function or a designated Change Authority/Advisory Board (CAB).

A: Analyzing and reviewing agreed service levels is a core, ongoing responsibility of the SLM to ensure that service delivery meets customer expectations and contractual obligations.

B: The service catalogue is the definitive source of information on all operational services, and its maintenance is a key duty of the Service Level Manager to ensure accuracy.

C: Negotiating service levels and formalizing them in SLAs with customers is a fundamental activity and a primary responsibility of the Service Level Manager role.

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1. Axelos. (2020). ITIL® 4 Practice Guide: Service Level Management.

Section 5.2.5, "Processes": This section details the activities within the SLM practice, which include "negotiation of service level agreements," "service level review," and ensuring information in the service catalogue is relevant to service levels. This supports the inclusion of A, B, and C as SLM responsibilities.

2. Axelos. (2020). ITIL® 4 Practice Guide: Change Enablement.

Section 5.2.5, "Processes": This guide describes the process for managing changes, stating that "assessing risks and impacts" is a key activity within the change enablement practice, performed by or on behalf of the change authority. This confirms that assessing the full impact is a Change Management responsibility, not a Service Level Management one.

3. University of Washington. (n.d.). ITIL v3 Foundations Courseware, Module 4: Service Design.

Service Level Management Process section: This educational material outlines the purpose of SLM as being "to negotiate Service Level Agreements with the customers and to design services in accordance with the agreed service level targets." It also links the SLM role directly to the maintenance of the Service Catalogue, confirming B and C as responsibilities.

4. Iden, J., & Eikebrokk, T. R. (2013). Implementing IT Service Management: A systematic literature review. International Journal of Information Management, 33(3), 512-523.

DOI: https://doi.org/10.1016/j.ijinfomgt.2013.01.004

Page 516, Table 2: This peer-reviewed article summarizes the key processes of ITSM frameworks. It clearly separates the activities of Service Level Management (e.g., "Define, negotiate, and agree SLAs") from Change Management (e.g., "Assess, authorize, and control changes"), reinforcing the distinct responsibilities of each role.