The document explores the effectiveness of theories of change (TOCs) in 35 joint programs supported by the UN Joint SDG Fund across 39 countries, highlighting significant variability in their quality and systemic leverage. Key tensions identified include the balance between short-term acceleration and long-term systemic change, emphasizing the need for integrated approaches to achieve sustainable development goals (SDGs). Recommendations suggest adopting a more systemic design-oriented framework to enhance strategy planning and leverage identification for impactful SDG acceleration.