The California Department of Aging (CDA) created this primer which highlights how state-level governance structures and staffing specifications support No Wrong Door (NWD) Long-Term Services and Supports (LTSS) Systems in different states, providing considerations for the design of the governance structure and staffing for California's Aging & Disability NWD System.  CDA reviewed and synthesized strategic plans, policy documents, codes and regulations, survey data, program narratives, program evaluations, and promising practices reports for this primer.