During the Security Assessment and Authorization process, what is the PRIMARY purpose for conducting a hardware and software inventory?

Calculating asset value is a financial or risk-valuation activity, not the primary purpose of inventory during SA&A, which focuses on security control applicability rather than monetary worth.

While an inventory may ultimately be included as documentation in the SA&A package, creating a list for inclusion is a byproduct, not the primary purpose of conducting the inventory.

Identifying obsolete hardware and software is a lifecycle management or vulnerability management concern, which is separate from the core SA&A goal of establishing what components are within the authorization boundary.

Defining the authorization boundary is foundational to the SA&A process because it determines exactly what components - hardware, software, and interfaces - fall within scope of the security controls being assessed. Without a clear inventory, the system boundary cannot be accurately drawn, making it impossible to determine what must be protected and evaluated. NIST SP 800-37 explicitly requires that the system boundary be defined through this inventory as part of the categorization and authorization steps.