The document discusses adopting a "collaborative approach" rather than a "customer-controlled approach" when an implementer company works with a customer company on a software project. It suggests that the implementer should regularly provide input and disagree with the customer to improve the product, rather than just agreeing with the customer. It provides techniques for the implementer to do this respectfully at different project phases, from bidding to initiation to execution, such as presenting alternative solutions, analyzing impacts of changes, and having open discussions. The goal is for the two companies to work as peers to deliver the best product outcome.