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What Is FedRAMP? Federal Cloud Authorization Explained

A plain-language guide to how the US government authorizes cloud services for federal use — impact levels, the ATO process, and what it means for procurement teams.

By Uniqcli Team

FedRAMP — the Federal Risk and Authorization Management Program — is the US government program that standardizes how commercial cloud services are security-assessed, authorized, and continuously monitored before federal agencies are allowed to use them. Established in 2011 and later written into law, it applies a single, government-wide security bar to cloud offerings (SaaS, PaaS, and IaaS) so that a service reviewed once can be reused across many agencies.

The program exists to solve a duplication problem: without it, every agency would separately vet the same cloud product against the same federal security standards. FedRAMP builds its requirements on the NIST SP 800-53 control catalog and centers on a 'do once, use many times' model, publishing authorized offerings in the public FedRAMP Marketplace. For IT and procurement teams, a product's FedRAMP status and impact level is often the deciding factor in whether a cloud service can even be bought for federal use.

How does FedRAMP authorization work?

The cloud service provider (CSP) documents its system and security controls in a System Security Plan (SSP) built on the NIST SP 800-53 baseline for the target impact level. An accredited, independent assessor — a Third Party Assessment Organization (3PAO) — then tests those controls and documents the results in a Security Assessment Report (SAR), with any remaining gaps tracked in a Plan of Action and Milestones (POA&M).

A federal agency reviews that package and, if the residual risk is acceptable, issues an Authorization to Operate (ATO). A central Joint Authorization Board historically granted a government-wide provisional authorization, but that board was replaced in 2024 and that path retired — offerings now follow the agency route under a single 'FedRAMP Authorized' designation. Authorized offerings appear in the FedRAMP Marketplace with a status such as 'Ready,' 'In Process,' or 'Authorized.' Authorization is not a one-time event: the provider must perform ongoing continuous monitoring (ConMon) — regular scanning and reporting — to keep the authorization active.

What are the FedRAMP impact levels?

FedRAMP uses three main baselines — Low, Moderate, and High — derived from the FIPS 199 categorization of a system's confidentiality, integrity, and availability. The level reflects how sensitive the federal data is: Low where loss would have limited impact, Moderate where a breach would cause serious harm, and High for the most sensitive unclassified systems such as law enforcement or emergency services. A lighter 'Low-Impact SaaS' baseline (LI-SaaS, sometimes called Tailored) exists for low-risk software-as-a-service.

Each step up adds substantially more controls to implement and assess, which raises the cost and time to authorize. Moderate is the most common baseline and covers the majority of federal SaaS use cases, so most products target it first. For buyers, the practical question is whether a service's authorized impact level matches or exceeds the sensitivity of the data you intend to put in it.

Why do federal agencies require FedRAMP?

Federal agencies operate under FISMA and OMB policy, which require cloud services handling government information to meet a consistent security bar. FedRAMP is the standardized, cloud-specific way to satisfy that mandate, and the FedRAMP Authorization Act — signed into law in December 2022 as part of the FY2023 National Defense Authorization Act — wrote the program into law, reinforcing it as the default path for federal cloud adoption.

The model's core value is reciprocity: because assessment and authorization are standardized, one agency's authorization package can be reused by others instead of every agency repeating the same review. Related frameworks build on it — the Department of Defense Cloud Computing Security Requirements Guide layers its own impact levels (such as IL4 and IL5) on top of FedRAMP baselines, and StateRAMP mirrors the approach for state and local governments.

When do you need a FedRAMP-authorized service?

As a general rule, if a cloud service will store, process, or transmit federal information on behalf of an executive-branch agency, it needs a FedRAMP authorization at the appropriate impact level. This is a property of the cloud offering itself, not of on-premise or self-hosted software, and it applies whether the agency buys the service directly or through a reseller or integrator.

The requirement is scoped to a specific cloud service offering and its defined authorization boundary — a vendor being 'FedRAMP authorized' for one product does not automatically cover its entire portfolio. Agencies and their contractors should confirm the exact offering, edition, and impact level rather than relying on a general company-wide claim.

What should procurement teams check before buying?

Start with the FedRAMP Marketplace and confirm the specific offering's status. 'Authorized' means it can be used today; 'In Process' or 'Ready' signals that authorization is underway but not yet complete, which may not satisfy an immediate requirement. Match the offering's impact level to your data classification, and if the workload is defense-related, verify the corresponding DoD impact level rather than FedRAMP alone.

Also confirm that the authorization covers the exact edition and deployment you are buying, that continuous monitoring is current, and — if you are building on top of an authorized IaaS or PaaS — which controls you inherit versus which remain your responsibility. Resellers, integrators, and the vendor's own compliance team can supply the authorization package details and Marketplace listing to support due diligence.

Key takeaways

  • FedRAMP standardizes security assessment, authorization, and continuous monitoring for cloud services used by US federal agencies, built on the NIST SP 800-53 control catalog.
  • Three impact levels — Low, Moderate, and High (plus a Low-Impact SaaS baseline) — map to FIPS 199 data sensitivity; Moderate is the most common baseline.
  • An independent, accredited 3PAO assesses the provider's controls, and a federal agency grants the Authorization to Operate (ATO), which is published in the FedRAMP Marketplace.
  • Authorization is ongoing, not one-time: providers must maintain continuous monitoring (ConMon) to keep it active.
  • FISMA, OMB policy, and the FedRAMP Authorization Act (enacted December 2022 in the FY2023 NDAA) make it the default requirement for federal cloud, with reciprocity so one authorization can be reused across agencies.
  • Buyers should verify the exact cloud offering, its Marketplace status, and that its impact level matches the data — and check DoD impact levels for defense workloads.

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Frequently asked

Is FedRAMP the same as FISMA?
No. FISMA is the federal law requiring agencies to secure their information systems; FedRAMP is the standardized program that applies FISMA-based requirements specifically to cloud services, using NIST SP 800-53 controls. In practice, FedRAMP is the cloud-focused path to meeting FISMA obligations.
What is a 3PAO?
A Third Party Assessment Organization is an independent, accredited firm that tests a cloud provider's security controls and documents the results in a Security Assessment Report. Using an accredited 3PAO is required so the assessment is objective rather than self-attested by the vendor.
What is the difference between 'FedRAMP Ready,' 'In Process,' and 'Authorized'?
These are FedRAMP Marketplace statuses. 'Ready' means a 3PAO has confirmed the service is likely to achieve authorization; 'In Process' means work toward authorization is actively underway; 'Authorized' means the offering has a live ATO and can be used by federal agencies today. Only 'Authorized' reflects a completed authorization.
Does FedRAMP cover DoD or classified systems?
FedRAMP addresses unclassified federal information. The Department of Defense adds its own requirements through the Cloud Computing Security Requirements Guide, which defines impact levels (such as IL4 and IL5) that build on FedRAMP baselines. FedRAMP does not authorize classified systems.

About the author

Uniqcli Team

Uniqcli's newsroom, buying guides and glossary are produced by our in-house team — seven procurement and technology professionals who source, screen and integrate IT and security hardware every day, working with two editors. Practitioners draft from live sourcing and integration work; editors review every piece for accuracy and plain language before it publishes.

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