This study aims to answer the question: What is the best way to help Early Intervention (EI) providers deliver high-quality services to children with communication delays for autism? The primary goal of this project is to examine the outcomes associated with delivering Project ImPACT, an evidence-based autism intervention that is delivered as part of routine training within Georgia's EI system. Providers in the study will receive one of two Project ImPACT training models to help us understand which training model helps providers learn Project ImPACT better. Specifically, this study will examine the: 1) the process and quality by which Project ImPACT is implemented and adapted by EI providers across the two training conditions; 2) factors that impact how well Project ImPACT is implemented; and 3) the child (i.e., social communication) and family (i.e., parent empowerment and fidelity) outcomes associated with receiving Project ImPACT.