What is PMO and PMC (simplified)

Feature	PMO	PMC
Primary Nature	Internal department or organizational structure.	External consulting firm or group of experts.
Main Client	The organization/company itself.	The Client/Owner of the construction project.
Focus	Standardization, Governance, and Portfolio Support across all company projects.	Direct Management and Oversight for a specific, defined project or program on behalf of the client.
Scope of Work	Sets and enforces company-wide processes, templates, and best practices.	Manages the project lifecycle: planning, design supervision, procurement, construction monitoring, and handover for a particular project.
Authority Type	Internal Authority to enforce standards and provide support. Can be Supportive, Controlling, or Directive.	Contractual Authority delegated by the client to act as their representative and coordinate external parties (contractors, designers).
Resource Management	Optimizes and allocates shared resources across the entire organization's project portfolio.	Manages project-specific resources (manpower, materials) allocated to that single project.
Risk Management	Tracks portfolio-level risks and champions organizational risk management maturity.	Identifies, assesses, and mitigates project-specific risks to ensure on-time, on-budget delivery.
Relationship to PMs	Supports and guides internal Project Managers (sets the rules they must follow).	Acts as a high-level manager/advisor who oversees the contractors executing the work, often replacing the owner's day-to-day management role.