Spectrum management is the process of regulating and administering the use of a limited resource, typically the electromagnetic spectrum, to ensure efficient utilization and prevent harmful interference. As a research field and academic concept, it investigates the technical, economic, legal, and policy frameworks governing spectrum allocation, assignment, and utilization across various applications. Its significance lies in optimizing the access and use of this critical, scarce resource, fundamental to wireless communications, broadcasting, and numerous other technologies, thereby maximizing societal and economic benefits.