Abstract
This chapter explores the notion of the commercial interface in relation to collaborating to deliver the project mission. It notes that commercial relations between the owner and the suppliers are some of the most contentious in strategic project organizing (SPO). The commercial interface is fronting the important issue of probity and corruption that became pervasive and the effective management of projects is impossible. The chapter then covers the commercial interface from the perspective of the owner and its contracting strategy, and then from the perspective of the supplier and its project strategy. It explains how the strategies can align to gain the mutual benefits of collaborative working and trust.
