The ITIL Maturity Model, based on the CMMI framework, provides a structured method to assess an organization's current capabilities against a defined scale (from Level 1 - Initial to Level 5 - Optimizing). Its primary purpose in the context of any ITIL practice, including Deployment Management, is to assess the maturity of that practice. This assessment helps an organization understand its strengths and weaknesses, identify areas for improvement, and create a roadmap for advancing its capabilities to better support its strategic objectives and value streams.

A. Defining training needs is a potential outcome or action taken based on a maturity assessment, not its primary purpose.

C. The model assesses the maturity of an entire practice or capability, not the specific operational performance of a single team like the service desk.

D. Establishing vendor links is a function of Supplier Management; a maturity assessment might highlight needs in this area but is not its main goal.

1. AXELOS. (2020). ITIL® 4: Digital and IT Strategy. TSO (The Stationery Office). Section 4.4.1, "Assess current state," describes using maturity assessments to understand current capabilities as a key step in strategic planning.

2. AXELOS. (2021). ITIL Maturity Model and Assessment. PeopleCert. Introduction, "The ITIL Maturity Model provides a framework for an organization to assess its service management capabilities... It enables an organization to benchmark its current maturity level and set targets for improvement."