This chapter examines the evolving landscape of project delivery in the context of global infrastructure development challenges. It explores the emergence of Progressive Design-Build and other collaborative delivery methods, highlighting their potential to address current industry challenges. The chapter proposes actionable recommendations for improving procurement systems, enhancing contractor selection, and implementing transparent practices in public works. It introduces the concept of an “Integrator” role to facilitate collaboration within project teams and emphasizes the need for proactive steps by all stakeholders to drive sustainable change. The discussion extends to the critical role of international financial institutions and government agencies in fostering sustainable growth and resilient infrastructure development, particularly in developing nations. By advocating for a comprehensive overhaul of project delivery approaches, this chapter aims to guide practitioners toward more efficient, transparent, and sustainable infrastructure development practices. It also introduces the concept of an “Integrator” role, that may be particularly useful in the developing states context to facilitate collaboration within project teams and stresses the importance of proactive steps by all stakeholders to drive sustainable change in project delivery.