This 4-year program is supported with funding from the U.S. Department of Health and Human Services" Minority HIV/AIDS Fund (MHAF) and is administered by the Health Resources & Services Administration"s HIV/AIDS Bureau. This funding opportunity was developed with input from the Division of Clinical and Community Services, HIV/HCV/STI Branch at the Indian Health Service, which will serve in a consultation capacity to the recipients. This funding opportunity will fund three entities to build organizational and workforce capacity at tribal and urban Indian organizations to implement sustainable, system-level improvements that improve identification of undiagnosed individuals with HIV, increase linkage and re-engagement in HIV care, and improve viral suppression.To achieve this purpose, within their defined service areas, the funded entities will:Conduct a review of previously conducted landscape analyses and previously developed training and technical assistance (T/TA) resources on strengthening HIV prevention, testing, and treatment systems at tribal and urban Indian health organizations to identify existing resources and gaps in the available T/TA.Create a T/TA plan, based on the review, that summarizes plans for individualized needs assessments; the goals, learning objectives, and types of T/TA materials to provide; and the anticipated topic, learning objectives, and potential participants for at least one learning collaborative.Tailor materials and provide T/TA at the provider/staff-level and the system-level to meet the specific needs of the tribal or urban Indian organization.Develop and implement a learning collaborative for tribal and/or urban Indian organization staff to accelerate peer learning and collective impact.Evaluate the effectiveness of the T/TA to support the organizations to implement the methodologies, tools, and techniques learned through T/TA.