What is a Project Management Office?

A Project Management Office (PMO) is a dynamic hub within an organization that empowers project success by supporting project managers and teams. Far from a one-size-fits-all solution, PMO’s vary widely in their roles, responsibilities, and structure, shaped by the unique needs of the organization they serve.

Whether providing hands-on project management, offering strategic advice, or driving methodology implementation—like PRINCE2 or the Project Management Body of Knowledge (PMBOK)—a PMO adapts to its environment. Some oversee decision-making and resource allocation, while others act as a home base for project staff or focus on advanced techniques like earned value analysis. Their location, too, is flexible, strategically positioned to best support the projects they champion.

In essence, a PMO is as diverse as the organizations it serves, with no single blueprint for success. Yet, certain standard configurations have emerged to guide organizations in optimizing their project outcomes.

Definition of a PMO

The Project Management Body of Knowledge (PMBOK) defines a PMO as:

An organizational structure that standardizes the project-related governance processes and facilitates the sharing of resources, methodologies, tools and techniques

You will notice that the roles of a PMO are not defined. Neither the PMBOK, nor PRINCE2, nor the International Project Management Association (IPMA) define the roles of a PMO, thus leaving the roles and responsibilities up to the individual organization. However, there are common roles that are found in practice, in most PMO’s.

Roles of a PMO

PMO’s have been known to perform many functions, including:

Provide project support functions such as planning and budgeting
Provide expert advice for project management functions like project management plans, stakeholder analysis, and risk analysis.
Maintain, develop and enforce project management standards and methodology, such as the PMBOK or PRINCE2 across the organization
Support organizational project management tools and software
Coaching, mentoring, training, and oversight
Managing shared resources
Maintain lessons learned
Nurture a culture of excellence within the organization
Provide a home for standard templates such as project management plans, project charts, and risk registers
Measure project progress
Project control (via earned value analysis, etc.)
Coordinating communication across projects
Decision making

Authority Levels

A PMO can have many authority levels, ranging from training right up to active involvement in projects.

Project Support. A PMO that provides training and assistance to the project manager, but the project manager is the final authority of project decisions. Generally called a Project Management Center of Excellence, it can provide templates, best practices, training, access to information, and lessons learned from previous projects.
Project Control. A PMO that is responsible for measuring project performance. The reports could be directed to the project manager or directly to the parent organization. Project control is usually performed via earned value management. The PMO gathers progress data for each project and performs the earned value calculations and creates progress reports, as well as other reporting as necessary.
Active Involvement. A PMO that has the authority to make project decisions. In this case, the project manager is not in charge of all aspects of a project. The project manager makes technical decisions and the PMO performs the project management functions like the project management plan, scheduling, and risk analysis. The role divisions can be some combination thereof.

The majority of PMO’s act in an advisory role rather than a direct, decision making one. They generally provide project management support and do not have responsibility for failed projects unless there is a recurring series of failed projects, in which case the advice and direction provided by the PMO is questioned. That being said, PMO’s with direct involvement and responsibility for project failure have value in certain organizations as well.

Organizational Scope

A PMO’s scope of authority can range from the whole organization down to one individual project:

The whole organization
Referred to as an Enterprise PMO, this type of PMO assists the whole organization. The authority level can range from project support and advice up to active project involvement. The organizational PMO often becomes a long term home for those who wish to make a career of project management.
One division
Also known as a Divisional PMO, this type of PMO assists one division of the company. The divisional PMO is often more readily accessible and performs more practical functions, because it is located closer to the project than an organization PMO.
One project
Also known as a project PMO, this type of PMO assists on a single project. Large megaprojects often have their own PMO which usually acts in an advisory role. It also maintains project records such as lessons learned, risk registers, or issue logs.

Maintenance of Project Records

The PMO is often used to compile and maintain project management documents. For large projects, maintaining the full gamut of documents required to fully comply with the Project Management Body of Knowledge, or PRINCE2, is a full time task. The PMO is a good place to store and maintain these documents, while sharing the cost over all projects.