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CMMC Implementation Has Arrived: What DoD Contractors Need to Know

By Laurie Shrout
October 2, 2025

CMMC Implementation Has Arrived: What DoD Contractors Need to Know

October 1, 2025 marked a fundamental shift in the DoD contracting landscape. With 48 CFR finalized and the Electronic Code of Federal Regulations updated with final CMMC language, the Cybersecurity Maturity Model Certification clause now appears automatically in applicable DoD contracts.

For defense contractors, this milestone transforms CMMC compliance from regulatory requirement to operational reality. Here's what you need to know as implementation unfolds across the defense industrial base.

October 1 CMMC changes

As of October 1, 2025, CMMC provisions are now included automatically in applicable DoD solicitations and contracts. No special approval from the Office of the Under Secretary of Defense for Acquisition and Sustainment is required.

Contracts issued from this point forward clearly specify CMMC certification level requirements based on the type of information contractors will handle:

  • CMMC Level 1: Federal Contract Information (FCI)—annual self-assessment
  • CMMC Level 2: Controlled Unclassified Information (CUI) with self-assessment or third-party assessment—valid for three years
  • CMMC Level 3: High-risk CUI requiring DoD assessment—valid for three years

The regulatory uncertainty that defined CMMC's development phase has ended. Defense contractors now face clear compliance expectations.

How DoD will phase CMMC requirements

CMMC implementation won't happen overnight across the entire defense industrial base. Based on patterns from similar DoD compliance initiatives, expect phasing that prioritizes:

Priority phase (first 6-12 months)

  • Contracts involving highly sensitive CUI
  • Critical infrastructure and weapons systems programs
  • High-value procurement actions
  • New contract awards and major modifications

Expansion phase (12-24 months)

  • Broader defense industrial base contracts
  • Supply chain subcontractor requirements
  • Existing contract renewals and extensions

This phased approach creates a critical window for organizations still building their compliance foundations. The question isn't whether certification requirements will reach your contracts—it's when, and whether you'll be ready.

If you're already CMMC certified

Organizations that invested early in CMMC readiness now have significant competitive advantage. Your preparation positions you to pursue opportunities that others may need to decline, and you can respond confidently when RFPs arrive with certification requirements.

Continue maintaining your compliance posture through regular assessments, updated documentation, and ongoing staff training. CMMC isn't a one-time achievement—it's an ongoing commitment to cybersecurity excellence.

How to achieve CMMC compliance

Many companies are still developing their CMMC capabilities. The key to successful certification is systematic capability building with clear priorities.

Start with the fundamentals we detailed in our comprehensive guide, "CMMC Compliance and Software Asset Management for DoD Contractors." 

Focus your immediate efforts on these core requirements

Establish complete asset visibility.

Create a comprehensive inventory of all software, hardware, and network components across your IT environment. CMMC assessors expect thorough environmental awareness. Secure only the assets you can see and track effectively.

Implement configuration management.

Document and standardize secure configurations across your entire IT infrastructure. Proper configuration management supports multiple CMMC control families simultaneously, including Access Control (AC), System and Communications Protection (SC), and Configuration Management (CM) domains.

Develop process documentation.

Capture your cybersecurity procedures, incident response protocols, and compliance workflows in formal documentation. Strong process documentation demonstrates the organizational maturity that CMMC third-party assessors evaluate during certification audits.

Conduct internal gap assessments.

Perform regular self-assessments against NIST SP 800-171 requirements (for Level 2) to identify compliance gaps before official CMMC assessment. Early gap identification allows for thoughtful remediation planning.

Why Software Asset Management is critical for CMMC success

Smart organizations recognize that Software Asset Management (SAM) provides environmental visibility that makes CMMC implementation efficient rather than chaotic. SAM serves as the foundation for multiple CMMC control requirements.

When you establish complete software inventory, license tracking, and configuration management, certification requirements become manageable business processes. This is why organizations with mature SAM capabilities consistently achieve smoother CMMC assessments and faster certification timelines.

SAM supports these CMMC control families:

  • Asset Management (AM): Maintain accurate hardware and software inventories.
  • Configuration Management (CM): Track and control system configurations.
  • System and Information Integrity (SI): Identify vulnerabilities and unauthorized software.
  • Incident Response (IR): Quickly identify affected systems during security events.

Software Asset Management isn't compliance overhead—it's cybersecurity infrastructure that supports CMMC excellence while delivering operational benefits across your organization.

What to do now

Pay close attention to upcoming solicitations in your market segment. Review requirements carefully for CMMC certification language, and evaluate each opportunity against your current compliance status. Being honest about your readiness level helps you make informed bid decisions and avoid contract commitments you can't fulfill.

If you see certification requirements appearing in contracts you planned to pursue, that's your signal to accelerate capability building or seek expert guidance on rapid implementation.

Take these immediate actions:

  • Review your current contract portfolio for CMMC applicability.
  • Assess your gap against required CMMC level (1, 2, or 3).
  • Develop a timeline for achieving certification.
  • Budget for assessment costs and remediation efforts.
  • Identify third-party assessment organizations (C3PAOs) if pursuing Level 2.
  • Train staff on CMMC requirements and your implementation plan.

Frequently asked questions about CMMC implementation

CMMC clauses can now appear in any applicable DoD contract issued after October 1, 2025. Implementation will be phased, with high-priority contracts likely receiving requirements first. Monitor your solicitations carefully for CMMC language.

Your required CMMC level depends on the type of federal information you handle: Level 1 applies to Federal Contract Information (FCI), Level 2 to Controlled Unclassified Information (CUI), and Level 3 to high-risk CUI programs. Contract solicitations will specify the required level.

Timeline varies significantly based on your starting point. Organizations with mature cybersecurity practices may achieve Level 1 certification in weeks, while Level 2 typically requires 6-12 months of preparation, remediation, and formal assessment by authorized C3PAOs (CMMC Third-Party Assessment Organizations).

Bid on contracts that don't require certification. However, as implementation expands across the defense industrial base, an increasing percentage of DoD contracts will include CMMC provisions, making certification essential for sustained federal contracting success.

Yes. Level 1 requires annual self-assessment. Level 2 and Level 3 certifications are valid for three years, after which organizations must undergo re-assessment by authorized C3PAOs to maintain their certified status.

Building long-term CMMC compliance success

The most successful organizations view CMMC certification as a foundation for sustained federal marketplace success rather than a one-time compliance burden. Strong cybersecurity practices, comprehensive asset management, and documented processes create operational excellence that benefits your entire organization beyond CMMC requirements.

These capabilities help you respond faster to new contract requirements, maintain better security posture against evolving cyber threats, and demonstrate the organizational maturity that federal customers increasingly value in their partners.

Long-term benefits of CMMC compliance

Enhanced cybersecurity defenses against nation-state threats

Reduced risk of costly data breaches and incidents

Improved operational efficiency through standardized processes

Competitive advantage in federal marketplace

Foundation for other compliance frameworks (FedRAMP, StateRAMP, NIST 800-171)

Your path forward

Whether you're maintaining established CMMC compliance or building new capabilities, the defense contracting landscape has fundamentally changed. Organizations that thrive will be those that approach requirements deliberately, leveraging proven frameworks and expert guidance to build sustainable compliance programs.

The SIE Group has helped federal agencies manage over $500M in software annually, developing the asset visibility and compliance frameworks that make complex regulatory requirements manageable. Our proven methodologies can help you build sustainable CMMC capabilities that support long-term competitive success in the defense industrial base.

Ready to strengthen your CMMC compliance position? Connect with our federal compliance experts to assess your current capabilities, or schedule a conversation to develop your CMMC implementation roadmap.

The CMMC era has begun. Your competitive advantage in federal contracting depends on how effectively you respond.