Digital Public Infrastructure (DPI) emerges as a crucial tool for solving complex global challenges. The Global Fishing Watch, a DPI platform, tracks illegal fishing, demonstrating how interoperable digital systems can address issues like biodiversity, climate, and food security. A G20 India report advocates for DPI's potential to accelerate progress across all 17 Sustainable Development Goals (SDGs). While DPI offers transformative solutions, challenges like inclusivity, data protection, and privacy concerns need addressing for its full benefits to be realized.