This publication introduces the Global Integration Index as a tool to explore how global and regional integration affect development outcomes. The 43 indicators in the index include digital connectivity and environmental cooperation and build on the Asian Development Bank's framework to measure progress in regional cooperation and integration. The index confirms deeper global economic linkages in Asia and the Pacific and enables comparison with other regions and across dimensions. The publication considers how policymakers can combine global and regional integration efforts with domestic policies for sustainable and inclusive economic growth.