The Complementarities Initiative, launched in 2015, represents a collaborative effort between ASEAN and ESCAP to align ASEAN’s community-building agenda with the United Nations 2030 Agenda for Sustainable Development. Building on the achievements of the first phase, which strengthened synergies under the ASEAN Community Vision 2025, the second phase, the Complementarities Initiative 2.0, supports the implementation of the ASEAN Community Vision 2045 with a renewed focus on fostering a greener, more resilient, and inclusive region. The Complementarities Initiative 2.0 further integrates ASEAN’s green strategic measures with the Sustainable Development Goals, emphasizing sustainable economic growth, climate resilience, and social equity while embedding gender equality, technological innovation, and environmental sustainability across all three ASEAN community pillars. The Complementarities Initiative 2.0 introduces five new priority areas - Green Finance, Resilience against Climate Change, Energy Transition, Effective Digital Transformation, and Networking and Partnerships - forming a comprehensive “GREEN” agenda to accelerate progress toward the Sustainable Development Goals. Key recommendations include operationalizing the ASEAN Centre for Climate Change, advancing the ASEAN Taxonomy for Sustainable Finance, strengthening regional data systems, enhancing digital governance, and improving institutional coordination to promote a more coherent, evidence-based, and sustainable development pathway for ASEAN.