The first functional area is represented by departments that exclusively perform functions / attributions / activities corresponding to ROP implementation, and within these departments, all the positions are involved 100% in the implementation of ROP. The departments of this functional area are called specialized departments for ROP and are part of the ROP Implementation Directorate:
- Assessment, Selection & Contracting Department
- Project Monitoring Department
- Project Assessment Department
- Department of Liaison with MA ROP

The departments located in the second functional area are departments with partial involvement/support for ROP:

- Finance and Accounting Department
- Technical Assistance Department
- Financial Preventive Control Office
- Internal Audit Department
- Human Resource & Organizational Development Department
- Legal
- Administrative and Archive Department
- Secretariat
- IT Systems & SIMS Department
- Regional Promotion & Investment Department
- Planning, Programming, Monitoring & Project Portfolio Department
- Ilfov Regional Office