These field visits exposed major cross-border industrial data integration barriers, leading to a targeted multi-layer cooperation framework for this cross-border corridor. Three-tier shared data ecosystem for the Johor-Singapore SEZDrawing strengths from US open research frameworks and Japan’s industrial data security rules, I propose a three-layer cross-border data system tailored to the JS-SEZ. Its semiconductor and machinery industries built shared manufacturing data platforms for SMEs, balancing industrial competitiveness and data sovereignty. For ASEAN, the corridor delivers a neutral testbed for cross-border industrial data governance, filling gaps in regional Industry 4.0 research. The JS-SEZ boasts unique cross-border policy strengths and complementary industrial layouts, making it an ideal pilot for hybrid shared industrial data ecosystems.