This document provides an overview of SAP MM (Materials Management) and describes key concepts in SAP MM such as the procurement process, organizational structure, and configuration. SAP MM deals with material management and inventory management processes. It supports procurement, master data, inventory management, invoice verification, and materials requirement planning. The organizational structure in SAP MM includes levels like client, company code, plant, storage location, purchasing organization, and purchasing group. Configuration in SAP MM is done through the implementation guide (IMG) to define the enterprise structure and settings.