A project management office, also known by its acronym OGP or PMO (from English project management office), is a department or group that defines and maintains process standards, generally related to project management, within an organization. The PMO works to standardize and economize resources by repeating aspects in the execution of different projects. The PMO is the source of documentation, direction and metrics in the practice of project management and execution.

A PMO can base its project management principles on methodologies and standards in the industry, such as PMI, PRINCE2, ISO 9001 and regulatory requirements of some governments such as the Sarbanes-Oxley Act in the United States, have propelled organizations to standardize their processes.

Organizations around the world are defining, sharing and collecting good practices in process and project management. Increasingly, PMOs are being given the responsibility to exert total influence over them, and to achieve an evolution of thinking that leads to continuous improvement of the organization.

PMOs can operate in aspects ranging from providing supporting functions for project management in the form of training, software, standardized policies and procedures, to direct direction and responsibility themselves for achieving project objectives.

The responsibilities of a project management office can range from providing support functions

for project management to the responsibility of direct management of a project.

The PMO can be a stakeholder if it has any direct or indirect responsibility for the outcome of the project.

Among its functions, the PMO can provide:

• - Administrative support services, such as policies, methodologies and templates.

• - Training, mentoring and advice to project directors.

• - Project support, alignments and training on project management and the use of tools.

• - Alignment of project personnel resources.

• - Centralization of communication between project managers, sponsors, directors and other stakeholders.[1]​.

• - Update the project management application.