Developments in the project management field are ongoing. This professional field<br/><br/>continuously broadens and becomes profounder. Therefore, IPMA has extended its<br/><br/>attention from project management to program management, portfolio management and<br/><br/>project support (PMO).<br/><br/>This has made manifest the need for a reference model in which the various functions and<br/><br/>corresponding competences and the relations between them are presented. Not only for HR<br/><br/>managers, but also for project and program managers and PMO heads.<br/><br/>In the first edition of this book, attention was given to the regular functions in the project<br/><br/>management field, as they are applied in the IPMA 4-level system. With the publication of<br/><br/>this second edition, the wish has been realized to make a complete function building for the<br/><br/>project management field available.<br/><br/>The second edition of this book does justice to PMO professionals’ needs for recognition<br/><br/>and appreciation of their added value for projects, programs and portfolios.<br/><br/>This is a publication of IPMA-NL.