In which organizational structure would the project manager have most authority?

In a weak matrix, the functional manager retains most authority and the project manager acts more as a coordinator with limited power.

In a balanced matrix, authority is shared equally between the project manager and functional manager, so neither has dominant control.

In a strong matrix organizational structure, the project manager holds significant authority comparable to a projectized organization, including control over budget and resources assigned full-time to the project. The functional manager's role is primarily administrative and supportive rather than directive over project work. This gives the project manager the ability to direct and prioritize work without constant negotiation with functional managers.

In an organic or simple structure, there is typically no dedicated project manager role and authority resides with the business owner or functional lead.