This short asynchronous course introduces students to the foundational concepts of Space Domain Awareness (SDA). Designed for space professionals at all levels, the course explains what SDA is, why it matters, and how it fits into national security strategy and space policy. Students will learn about the methods, tools, and organizations involved in achieving SDA and understand its critical role in enabling space operations. The primary goal of the course is to provide a strong conceptual framework that empowers learners to further explore SDA as it evolves in complexity and importance.