The document discusses Participatory Guarantee Systems (PGS) in Vietnam. PGS is a quality assurance system for smallholder farmers that operates outside of third-party certification. It emphasizes stakeholder participation, including producers and consumers. PGS was adopted in Vietnam in 2008 to help organic farmers access local markets without certification. Since then, PGS Vietnam has expanded to involve more farmers and provinces, developed standards and procedures, and gained recognition. PGS has helped farmers increase incomes and connect with consumers, while also influencing organic policies in Vietnam. However, expanding PGS further faces challenges of capacity, funding, and land policies.