Traditional (non-agile) Project Management is clear about the authority of the Project Manager over the resources: he has none. It is the functional managers who own the resources: they have their loyalty (resources are loyal to their functional managers as they’re the ones who report quarterly on their performance), they have their gratitude (most resources are hired directly by their functional managers), and they have their respect. The dependence on functional management is a major limitation in Project Management, as Project Managers are constantly at the mercy of both the functional managers and the resources (indirectly, for example, an excellent resource resenting the presence of the Project Manager might disobey him, while still being supported and endorsed by his functional manager), and they have to compromise, or “offer something” in return, just to get things done. Note that this limitation is almost negligible in highly projectized organizations.