An organization structure that standardizes the project-related governance processes and facilitates the sharing of resources, methodologies, tools, and techniques is referred to as:

A Project Management Information System (PMIS) is a tool or set of tools used to gather, integrate, and disseminate the outputs of project management processes, not an organizational governance structure.

A Project Management System refers to the aggregation of processes, tools, techniques, methodologies, resources, and procedures used to manage a project, not a formal organizational unit.

A Project Management Office (PMO) is an organizational structure that standardizes project-related governance processes and facilitates the sharing of resources, methodologies, tools, and techniques across projects. PMOs vary in the degree of control and influence they have, ranging from supportive to controlling to directive roles within an organization.

A Project Management Knowledge Area is a defined area of concentration within the PMBOK framework (such as Integration, Scope, or Schedule), not an organizational entity.