This training package is intended to train practicing HIV service providers working directly and regularly in HIV counseling & testing, prevention of mother-to-child transmission, and antiretroviral therapy services. Ideally participants should be clinical staff based in public or private health facilities with at least three months experience providing HIV counseling & testing, prevention of mother-to-child transmission, and/or antiretroviral therapy services. This can include HIV counseling & testing as provider-initiated counseling and testing (e.g., in in-patient services, prevention of mother-to-child transmission services in maternal and child health) as per national policy and implementation guidelines. Each training should be organized to train 20-25 participants. Trainings with fewer than 20 participants do not allow for adequate small group work or group discussion exchanges. More than 25 participants become unwieldy for trainers to manage and these trainings do not allow for the application of participatory training methods. At least two trainers should lead the 3-day training. These trainers should commit to attending the complete training to ensure continuity. A trainer should be assigned to each unit. The trainers should have experience in interpersonal communication and counseling, stigma and discrimination reduction, and dynamic, interactive training methods. See also the Participant’s Guide, Job Aid, and the PowerPoint all with the same title.