In Risk Management Framework (RMF), what does the term 'authorization boundary' refer to?

The term 'authorization boundary' within the Risk Management Framework (RMF) specifically refers to the physical and logical boundaries that define the information systems covered by an Authorization to Operate (ATO). This boundary encompasses all the components, processes, and information systems that fall under the purview of the authorization. It helps to delimit the security assessment and ensures that any vulnerabilities or risks associated with these systems are adequately identified and managed. By establishing this boundary, organizations can focus their risk management efforts and resources more effectively, ensuring that all elements under the ATO are assessed for compliance with security requirements.

In the context of risk management, clearly defining the authorization boundary is crucial as it lays the groundwork for identifying assets, assessing risks, and implementing appropriate security controls that are needed to safeguard information within those boundaries.