The P3O® Foundation (2013) manual specifies that a Business Case for a P3O should provide reasons for its need. Section 4.2.2 states, "The Business Case must articulate the reasons why any form of P3O is required, including the benefits and justification for investment, to gain senior management approval." This contrasts with staff roles (B), processes (C), or the Head’s appointment (D), which are implementation details. The 2013 edition emphasizes this justification as the core purpose, ensuring strategic alignment and resource commitment. This approach secures buy-in and supports the P3O’s establishment.