There are three main types of project management offices (PMOs) that can be used independently or together within an organization:
1. A Weather Station PMO tracks and reports on project activities without influencing them, providing executives with visibility into project status, costs, risks, and issues.
2. A Control Tower PMO treats project management as an organizational asset by establishing standards, consulting on how to follow them, enforcing them, and improving them over time.
3. A Resource Pool PMO manages a repository of project managers that project managers and executives can draw from for staffing projects, ensuring a consistent level of skills and adherence to organizational requirements. Together these three PMO types can work to effectively govern an organization's