Enterprise Project Management, in broad terms, is the field of organizational development that supports organizations in managing integrally and adapting themselves to the changes of a transformation.
Enterprise Project Management is a way of thinking, communicating and working, supported by an information system, that organizes enterprise's resources in a direct relationship to the leadership's vision and the mission, strategy, goals and objectives that move the organization forward.
Simply put, EPM provides a 360 degree view of the organization's collective efforts. In recent years, with general adoption of (IT) governance practices, Enterprise Project Management has become more specific: whereas in the 1990s focus was generally on the management of the single project, in the subsequent decade, the focus lay more on the fact that a project is likely to be not the only one in the enterprise.
The project co-exists with many other projects in the enterprise, or may be part of one or more programs. It may utilize (human) resources that are shared among other projects.