The document discusses Vietnam's response to the HIV epidemic and improving their cascade of services. It outlines Vietnam's cascade and findings from provincial rapid assessments. Key findings include that many PLHIV are not seeking testing or linking to care after testing positive, ART initiation is not growing in many sites, and coordination of services is fragmented. The cascade framework is being used to identify gaps where interventions can have the most impact, like increasing testing and linkage to care and reducing viral loads through sustained ART. Investments in applying the cascade approach at local levels can substantially improve the performance of Vietnam's HIV response system.