This document provides an introduction to the PM2 Project Management Methodology guide. It describes the objectives of the guide, intended audience, and overview of the PM2 methodology. The PM2 methodology was developed by the European Commission to manage project lifecycles effectively and deliver solutions and benefits. It incorporates globally accepted project management practices. The Centre of Excellence in PM2 supports the methodology within the EC and coordinates the Project Support Network. The Open PM2 initiative aims to make PM2 more widely available to improve project management competency across Europe.