This NOFO is for technical assistance to the national HIV programs supported by the CDC Central Asia Regional office under PEPFAR. The technical assistance provider will pilot and evaluate new models of service delivery for 1) accelerating antiretroviral treatment (ART) scale up, adherence, and retention 2) HIV case finding and 3) harm reduction among Key Populations (KP) and PLHIV. Successful models of service delivery and electronic monitoring of patient care will be handed over, scaled up, and sustained by host country government by the end of the five year cooperative agreement.