NIST 800-53 and FedRAMP

What NIST SP 800-53 is

NIST Special Publication 800-53 is the catalog of security and privacy controls that federal information systems are measured against. Revision 5 organizes those controls into families such as access control, audit and accountability, incident response, and configuration management, and it applies to systems across the federal government and the organizations that support them.

Controls are grouped into baselines by impact level. A system categorized as Low, Moderate, or High inherits a different starting set of controls, and the documentation has to show how each applicable control is implemented for that specific system.

What FedRAMP is

FedRAMP is the federal program that standardizes how cloud products are assessed, authorized, and monitored for use by government agencies. It is built directly on the NIST 800-53 control baselines, with FedRAMP specific requirements layered on top.

A cloud service offering is authorized at a baseline, most commonly Moderate or High, and that authorization lets agencies adopt the service without repeating the full review themselves.

Who needs it

Cloud service providers that want to sell to federal agencies need a FedRAMP authorization to be eligible. Agencies rely on 800-53 and FedRAMP to authorize and continuously monitor the systems they operate or buy.

• —Cloud service providers pursuing an agency authorization or the FedRAMP marketplace
• —Federal agencies authorizing internal and vendor systems
• —Contractors and integrators authoring documentation on behalf of either

The core documentation

Authorization comes down to a written package that proves how the system meets every applicable control. The central artifacts are consistent across 800-53 and FedRAMP work.

• —System Security Plan (SSP) describing the system and how each control is met
• —Security Assessment Report (SAR) capturing independent testing results
• —Plan of Action and Milestones (POA&M) tracking open items to closure
• —Supporting policies, procedures, and the evidence that backs them

How an engagement works

The work is largely documentation. Each control narrative has to be accurate, specific to the system, and ready for an assessor to test against. That is where timelines usually stretch, because the people who understand the system end up writing for months.

Verdict drafts the documentation grounded in the actual control requirements, then experienced federal practitioners review and finalize every package before it reaches you.