This article reviews and compares key intervention methods for Autism Spectrum Disorder (ASD), including Applied Behavior Analysis (ABA), TEACCH, SCERTS, and Intensive Interaction. The purpose of the study is to examine the theoretical foundations, methods of implementation, and document advantages and limitations of each approach, with particular emphasis on the unique contribution of Intensive Interaction. A narrative review of the literature highlights that while ABA, TEACCH, and SCERTS have strong applications in skill development, structured teaching, and emotional regulation, Intensive Interaction stands out for its highly person-centered and relational focus. Findings indicate that no single intervention can meet the diverse needs of all individuals with ASD. Instead, combining methods according to developmental profiles, communication abilities, and family contexts may provide the most beneficial outcomes.