Organizations that work with the U.S. government face strict requirements spanning procurement, ethics, reporting, and cybersecurity. That’s because many contracts involve handling sensitive or regulated data—so failures can lead to contract loss, penalties, and reputational damage.

In practice, “government contracting compliance” usually means aligning your program to standards like the Federal Acquisition Regulation (FAR) and the Defense Federal Acquisition Regulation Supplement (DFARS), plus security frameworks like NIST SP 800-171, CMMC, and (for cloud providers) FedRAMP.

This guide breaks down what each framework is, when it applies, and how to choose the right path based on the type of contract and data you handle.

Note: FedRAMP is undergoing updates that may affect authorization requirements. Some information on this page may change as new guidance is finalized. View the official changelog: FedRAMP changelog. For context on how we handle updates in this post, see the full disclaimer.

When security requirements keep stacking up

GIF via GIPHY

Key takeaways

FAR and DFARS set baseline obligations for federal contracting, and DFARS adds security requirements when you handle Controlled Unclassified Information (CUI).
NIST SP 800-171 is the control baseline commonly used for protecting CUI in non-federal systems.
CMMC adds certification for DoD contractors, building on NIST SP 800-171 practices.
FedRAMP is a go-to-market gate for cloud service providers serving federal agencies: authorization is often a hard requirement.
Scope drives everything: mis-scoping systems, services, or data types is one of the fastest ways to create delays and rework.

Government contracting compliance: what it means

Government contracting compliance is the set of policies, controls, and evidence you need to win and keep federal contracts. Requirements vary by agency and contract, but they commonly include:

Procurement and ethical rules (how you buy, subcontract, and report issues)
Security controls (how you secure systems and protect sensitive data)
Documentation expectations (how you prove controls operate consistently)

Compliance frameworks help standardize how you meet these expectations—especially when multiple contracts and data types are in play.

Key frameworks (and when they apply)

Framework	Mandatory	Certification / Authorization	Applies to	Focus
FAR / DFARS	Yes	No	Federal contractors; DFARS is common for DoD work	Procurement rules + cybersecurity obligations (often tied to CUI)
NIST SP 800-171	Commonly required	No formal certificate	Organizations handling CUI in non-federal systems	Security controls for protecting CUI
CMMC	Yes (for many DoD contracts)	Yes	DoD contractors and subcontractors	Formal certification for protecting FCI/CUI
FedRAMP	Often required in practice	Authorization	Cloud service providers serving federal agencies	Cloud security assessment + authorization + continuous monitoring

FAR and DFARS (and why CUI changes everything)

The Federal Acquisition Regulation (FAR) is the core rulebook for how the U.S. government buys products and services. FAR compliance is mandatory for federal agencies and typically flows down to contractors through contract clauses.

DFARS extends FAR for Department of Defense (DoD) contracting. DFARS adds additional security and reporting requirements, particularly when contracts involve CUI.

If your work touches CUI, DFARS clauses can require you to implement specific security controls and maintain evidence that those controls are operating—not just documented.

What “good” looks like

A clear scope statement: which systems, services, and data types are in scope (and why)
Defined roles and reporting: code of conduct, incident reporting paths, escalation, and training
A living system security plan (SSP) and POA&M where required (kept current as systems change)

NIST SP 800-171 (protecting CUI)

NIST Special Publication 800-171 provides security requirements for protecting CUI in non-federal systems and organizations. It’s widely referenced in federal contracting requirements and is foundational to DoD programs.

NIST SP 800-171 organizes controls across multiple requirement families. The exact structure evolves over time, but the intent stays consistent: protect CUI through access controls, configuration practices, monitoring, and incident handling.

Important nuance: NIST SP 800-171 does not issue a “certificate.” Compliance is demonstrated through evidence, assessments, and (where applicable) customer validation or third-party reviews.

CMMC (DoD certification levels)

The Cybersecurity Maturity Model Certification (CMMC) is the DoD’s certification framework for contractors handling Federal Contract Information (FCI) and CUI.

CMMC is designed to reduce “paper compliance” by requiring assessments (self-assessments and/or third-party audits depending on level) and requiring ongoing affirmations to maintain certification.

At a high level, CMMC is commonly described in three levels:

CMMC Level 1: focused on safeguarding FCI with a smaller set of foundational practices and a self-assessment process.
CMMC Level 2: focused on protecting CUI, broadly aligned to NIST SP 800-171 practices, with self-assessment or third-party assessment depending on contract requirements.
CMMC Level 3: aimed at the highest sensitivity use cases, adding additional controls and requiring government-led assessment.

If you’re targeting DoD contracts, treat CMMC as a program with three moving parts: control implementation, assessment readiness, and continuous evidence (so annual affirmations and re-assessments aren’t rebuild-from-scratch events).

If you’re starting from scratch, use our checklist to structure the work: CMMC certification: a checklist to get you started.

FedRAMP (cloud authorization)

FedRAMP standardizes how federal agencies assess, authorize, and continuously monitor cloud services. For many cloud providers, FedRAMP authorization is effectively a prerequisite for selling to U.S. federal agencies.

The FedRAMP lifecycle typically includes:

Readiness and planning (scope, boundary, and documentation approach)
Security control implementation
Independent assessment (via accredited assessors, depending on path)
Authorization (agency or JAB path depending on program route)
Continuous monitoring (ongoing evidence, reporting, and change control)

FedRAMP is actively evolving. If you’re planning a FedRAMP path, always validate requirements against the latest official guidance.

Which framework should you pursue?

The “right” framework depends on two things: who you’re selling to and what data you’ll handle.

If you’re contracting with the DoD and handling FCI/CUI, you’ll likely need a CMMC path—built on the same security baseline as NIST SP 800-171.
If you’re a cloud provider selling to federal agencies, FedRAMP authorization is often the primary gate to revenue.
If you’re earlier in maturity, start by tightening your baseline program around NIST SP 800-171-aligned practices, then add the certification/authorization layer when your scope and controls are stable. A practical companion resource: The ultimate NIST 800-171 compliance checklist (what most businesses miss).

A practical adSecureSlatege: these frameworks are often complementary, with meaningful overlap in control intent. When you implement controls as reusable building blocks, you reduce duplication across audits and contracts.

Common challenges (and how to avoid them)

Government compliance programs fail less because teams “don’t care”—and more because the work is complex, distributed, and easy to mis-scope.

1) Mis-scoping the environment

If you don’t define what’s in scope (systems, services, users, data flows), you’ll chase evidence forever. Start with a crisp boundary and document exceptions.

2) Evidence scattered across tools

Government compliance is documentation-heavy. Teams often lose time reconstructing proof from tickets, screenshots, spreadsheets, and point tools.

3) Continuous monitoring becomes “continuous work”

Controls change. People change. Systems drift. If you only collect evidence at audit time, you’ll repeatedly pay the same cost.

4) Internal assessments aren’t repeatable

Many teams can do a one-time gap assessment. Fewer can do it consistently, with clear owners and time-bound remediation.

An effective way to reduce these pain points is to use a compliance automation platform that centralizes evidence, assigns ownership, and keeps controls continuously up to date.

Streamline public sector compliance with SecureSlate

SecureSlate helps teams operationalize government contracting requirements by turning frameworks into a living system—so you can prove compliance without running a last-minute scramble.

With SecureSlate, you can:

Centralize evidence so SSP/POA&M inputs, policies, and technical artifacts are easier to find and reuse
Track controls and owners across requirements, assessments, and remediation work
Run repeatable readiness reviews so gaps don’t surprise you right before an assessment window
Reduce duplication by mapping overlapping control intent across programs

If you’re pursuing federal business, a strong compliance operating system is a competitive adSecureSlatege—especially when buyers expect proof, not promises.

Get started for free to centralize your scope, owners, and evidence—so government contracting compliance stays audit-ready year-round.

FAQ: Government contracting compliance

Is government contracting compliance only for defense contractors?

No. Many non-defense contractors still have federal requirements. The exact obligations depend on the agency, contract clauses, and whether regulated data types (like CUI) are involved.

What’s the difference between FAR and DFARS?

FAR is the baseline set of federal procurement rules. DFARS adds requirements specific to DoD contracting, including additional cybersecurity expectations when contracts involve CUI.

Is NIST SP 800-171 a certification?

Not typically. NIST SP 800-171 is a control baseline. Compliance is shown through assessments and evidence, but NIST itself doesn’t issue a certificate for 800-171.

Does CMMC replace NIST SP 800-171?

No. CMMC builds on NIST SP 800-171-aligned practices and adds a certification model with defined assessment requirements.

Is FedRAMP optional?

FedRAMP isn’t legally mandatory for every organization, but for many cloud providers selling to federal agencies, it’s effectively a requirement to compete.

What’s the biggest mistake teams make?

Mis-scoping: defining boundaries too broadly (causing wasted effort) or too narrowly (causing surprises and rework when assessors review the real environment).

Disclaimer (FedRAMP updates + legal note)

FedRAMP is undergoing updates that may affect authorization requirements. Some information in this article may change as new guidance is finalized. See the official FedRAMP changelog: FedRAMP changelog.

SecureSlate is not a law firm, and this article does not constitute legal advice. For guidance on your legal obligations, consult qualified counsel.

Government contracting compliance 101: Everything you should know (FAR, DFARS, NIST 800-171, CMMC & FedRAMP)