This thesis explores the challenge of designing successful public-private partnerships (PPPs) for development and contributes to the discourse on partnerships and business engagement in society with four papers. Paper I adopts the company perspective and develops a conceptual framework for aligning the corporate economic interests with the partnership's social goal. Based on a theoretical analysis, Paper II examines the role which different structures play in handling common design challenges and contributes to building a framework that facilitates more informed and tailored decisions to structure PPPs for development. Papers III and IV are empirical: The former analyzes how partners cope with tensions occurring on the PPP's boundaries. Building on insights from four case studies, it develops a comprehensive framework for boundary management. Based on a seminal qualitative study of 19 organizations, Paper IV then explores the roles of broker organizations which increasingly facilitate the partnering process of PPPs for development.