This session explores how counties like Alameda and Sacramento are leading the way in building a Social Health Information Exchange (SHIE) that bridges healthcare, housing, and social services data to enable whole-person care. Attendees will gain insights into data-sharing governance, trust-building with partners, and implementation strategies that accelerate collaboration across sectors. Attendees can expect a dynamic discussion that blends policy, technology, and operational perspectives, offering them tangible takeaways for initiating or scaling SHIE efforts in their own communities.