ISA Therapy is a neurodiversity‑affirming, multi‑modal framework designed to support relational safety, individualized engagement, and interdisciplinary collaboration across developmental stages. Grounded in contemporary research and informed by lived experience, ISA Therapy integrates multiple therapeutic disciplines into a cohesive, connection‑first approach that centers autonomy, attunement, and adaptive support. This introductory guide provides a concise orientation to the philosophical foundations, structural components, and intended applications of the ISA Therapy framework. It outlines the core modalities, the role of practitioner self‑regulation, and the importance of contextualized, developmentally responsive care. While not a substitute for formal training, this guide offers institutions, educators, and clinicians an accessible overview of the framework's purpose, scope, and professional relevance.