This document provides an overview of the Data Management Maturity (DMM) model and its ecosystem. It introduces the presenters and describes the development of the DMM model over 3.5 years with input from 50+ authors and 70+ peer reviewers. The DMM is designed to help organizations evaluate and improve their data management capabilities through a structured assessment and benchmarking approach. It describes the DMM structure, levels, and themes and outlines upcoming certification programs, products, and events to support widespread adoption of the DMM model.