Every organization claims to care about security. But there is a vast difference between caring about security and embedding it into the fabric of how software gets built and deployed. DevSecOps maturity models help us understand that difference and chart a path forward.
The challenge is that most maturity models feel abstract. They describe ideal states without helping you recognize where you actually are or what concrete steps to take next. This article aims to change that by providing clear indicators for each stage and practical guidance for advancement.
Why Maturity Matters
Before diving into the stages, it is worth understanding why maturity matters in the first place. Immature security practices create three distinct problems:
- Unpredictable risk. When security is ad hoc, you cannot reliably predict or manage your exposure. Vulnerabilities slip through based on who happened to review the code that day, not based on systematic controls.
- Developer friction. Security that shows up late in the development cycle creates bottlenecks, rework, and resentment. Teams learn to route around security rather than work with it.
- Inefficient resource allocation. Without metrics and processes, you cannot tell whether your security investments are working. You end up either overspending on low-risk areas or underspending on critical ones.
Maturity progression addresses all three problems by making security systematic, early, and measurable.
The Cybersecurist Lens: Question One
"What is the adversary's most likely path to value?" At lower maturity stages, this question is nearly impossible to answer because you lack visibility into your attack surface and development practices. As maturity increases, you gain the data and processes needed to reason about adversary paths systematically.
Stage 1: Ad Hoc
Characteristics
Security happens when someone remembers to think about it. There are no formal processes, no consistent tooling, and no defined responsibilities. Security testing, if it happens at all, occurs right before release when it is too late to fix anything significant.
- No documented security requirements or standards
- Security testing is manual and inconsistent
- Vulnerabilities discovered in production are common
- Developers have no security training or awareness
- No visibility into application security posture
Organizations at Stage 1 often do not realize they are there. Security feels like someone else's job, perhaps the IT team or the one person who happens to know about security. When breaches or vulnerabilities occur, they are treated as isolated incidents rather than symptoms of systemic issues.
The most telling sign of Stage 1 maturity is the absence of security conversations during development. If your sprint planning never includes security considerations, if code reviews never examine security implications, if deployment checklists have no security items, you are operating ad hoc.
Moving Beyond Stage 1
The first step is acknowledging the gap. Conduct a basic inventory: What applications do you have? What data do they process? Who is responsible for their security? Often, the answers reveal significant blind spots.
Next, establish minimum viable security gates. This does not require sophisticated tooling. Start with basic requirements: all code must be reviewed before merge, all dependencies must be scanned before release, all production access must require multi-factor authentication. These gates are imperfect but better than nothing.
Stage 2: Repeatable
Characteristics
Basic security gates exist and are applied consistently. Some tools are in place, typically static analysis or dependency scanning. Security is still primarily reactive, but at least it happens on a regular schedule.
- Security scanning tools deployed but not fully integrated
- Defined security gates at key pipeline stages
- Some security training available to developers
- Vulnerability remediation tracked but not measured
- Security team reviews high-risk changes
Stage 2 represents the point where security becomes part of the development conversation, even if awkwardly. Teams know they need to pass security scans before deploying. They understand that certain changes require security review. The process exists, even when people try to work around it.
The limitation at Stage 2 is that security remains a gate rather than a practice. Developers see security tools as obstacles to navigate rather than aids to building better software. The security team becomes a bottleneck because they are the only ones who understand the tools and can interpret the results.
The Cybersecurist Lens: Question Three
"What would we lose if we lost visibility here?" Stage 2 organizations often struggle to answer this question because their visibility is limited to what their point-in-time scans reveal. They can tell you about known vulnerabilities but not about configuration drift, access anomalies, or emerging attack patterns.
Moving Beyond Stage 2
The key transition from Stage 2 to Stage 3 is integration. Security tools need to move from being gates that happen after development to being feedback loops that inform development. This requires two changes:
Developer enablement. Developers need to be able to run security scans themselves, interpret the results, and fix issues without waiting for security team involvement. This means IDE plugins, pre-commit hooks, and clear documentation about common vulnerability patterns.
Pipeline integration. Security scans should run automatically on every commit, not just at release gates. Fast feedback catches issues when they are cheap to fix. Slow feedback creates backlogs and frustration.
Stage 3: Defined
Characteristics
Security testing is integrated into the CI/CD pipeline and runs automatically. Developers receive immediate feedback on security issues. Standards and policies are documented and consistently applied across teams.
- Automated security testing in CI/CD pipelines
- Developers can run security scans independently
- Security champions embedded in development teams
- Documented security standards and coding guidelines
- Consistent vulnerability management process
- Basic metrics tracked (mean time to remediate, vulnerability counts)
Stage 3 is where DevSecOps starts to feel real. Security is no longer something that happens to development; it is something that happens during development. Developers know how to write secure code, have tools that help them do so, and receive feedback quickly enough to act on it.
The security team's role shifts from gatekeeper to enabler. Instead of reviewing every change, they maintain the tools, update the standards, and support the security champions embedded in development teams. This scales better and creates a more collaborative culture.
However, Stage 3 organizations often plateau. They have processes and tools, but they lack the metrics to know whether those processes and tools are actually reducing risk. They fix vulnerabilities but do not know if they are fixing the right ones or fixing them fast enough.
Moving Beyond Stage 3
The transition to Stage 4 requires measurement. You need to know not just how many vulnerabilities you find but whether finding those vulnerabilities actually improves security outcomes. This requires:
- Tracking vulnerability trends over time, not just point-in-time counts
- Measuring how long vulnerabilities exist before remediation
- Correlating security metrics with business risk indicators
- Benchmarking against industry peers where possible
Stage 4: Managed
Characteristics
Security decisions are driven by data. Metrics inform resource allocation, tool selection, and process improvements. The organization can quantify its security posture and demonstrate improvement over time.
- Comprehensive security metrics dashboard
- Risk-based vulnerability prioritization
- Security SLAs aligned with business criticality
- Regular security posture reporting to leadership
- Threat modeling integrated into design phases
- Continuous compliance monitoring
Stage 4 organizations can answer the question executives actually care about: "Are we getting more secure over time, and is our investment justified?" They have moved beyond activity metrics (how many scans did we run?) to outcome metrics (how has our exploitable attack surface changed?).
At this stage, security becomes genuinely strategic. Investment decisions are based on risk reduction potential, not vendor marketing. Process improvements are tested and measured, not assumed to work. The security team can demonstrate value in terms the business understands.
The Cybersecurist Lens: Question Four
"Where are we creating more complexity than protection?" Stage 4 maturity enables honest answers to this question. With comprehensive metrics, you can identify security controls that create friction without proportionate risk reduction and security investments that are not delivering expected value.
Moving Beyond Stage 4
The transition to Stage 5 is less about adding capabilities and more about changing orientation. Stage 4 organizations measure and manage. Stage 5 organizations continuously improve. This requires:
- Systematic experimentation with new security practices
- Proactive threat research and intelligence integration
- Developer feedback loops that improve security tools and processes
- Security innovation that enables rather than constrains business objectives
Stage 5: Optimized
Characteristics
Security is fully embedded in organizational culture and continuously improving. The shift-left transformation is complete: security happens at the earliest possible moment in the development lifecycle. The organization innovates on security practices and contributes back to the industry.
- Security requirements defined at product inception
- Automated security decision support throughout SDLC
- Continuous feedback loops between production and development
- Proactive threat hunting and intelligence integration
- Security enables rapid, confident deployment
- Organization contributes to security community (tools, research, standards)
Stage 5 organizations have achieved what DevSecOps promises: security that accelerates rather than impedes development. They deploy faster than their less mature peers because they have confidence in their security controls. They innovate more freely because they understand and can quantify their risk exposure.
Critically, Stage 5 is not a destination but a practice. These organizations continuously evaluate their security posture, experiment with improvements, and adapt to evolving threats. They recognize that yesterday's optimized state becomes tomorrow's technical debt if not continuously refined.
"The goal of DevSecOps maturity is not to check boxes on a maturity model. It is to build the organizational capability to continuously improve security outcomes while enabling business objectives."
Assessing Your Current State
Honest assessment is the foundation for meaningful improvement. Here are questions to help you determine your current maturity stage:
Pipeline Integration
- Do security scans run automatically on every commit? (Stage 3+)
- Can developers run security scans before committing? (Stage 2+)
- Are scan results integrated into developer workflows? (Stage 3+)
- Do failed security checks block deployment automatically? (Stage 2+)
Developer Engagement
- Do developers receive security training? (Stage 2+)
- Are there security champions in development teams? (Stage 3+)
- Can developers fix most security issues without security team involvement? (Stage 3+)
- Do developers proactively consider security during design? (Stage 4+)
Measurement and Visibility
- Do you track vulnerability counts over time? (Stage 3+)
- Can you report mean time to remediate? (Stage 4+)
- Are security metrics reported to executive leadership? (Stage 4+)
- Do security metrics inform investment decisions? (Stage 4+)
Process Maturity
- Are security standards documented? (Stage 2+)
- Is threat modeling part of the design process? (Stage 4+)
- Do you have defined SLAs for vulnerability remediation? (Stage 4+)
- Is there a systematic process for evaluating and improving security practices? (Stage 5)
The Cybersecurist Lens: Question Five
"Where does clarity reduce risk more than control?" This question becomes central at higher maturity levels. Often, the most effective security improvement is not adding another control but making existing controls more visible and understandable. Developers cannot use tools they do not understand. Leaders cannot support investments they cannot evaluate.
Practical Guidance for Advancement
Moving up the maturity ladder requires sustained effort, but it does not require perfection. Focus on the highest-value improvements for your current stage:
From Stage 1 to Stage 2
- Implement dependency scanning in your build process
- Establish a policy requiring code review for all changes
- Create a basic inventory of applications and their data sensitivity
- Define who is responsible for security decisions on each team
From Stage 2 to Stage 3
- Integrate security scanning into CI/CD pipelines with fast feedback
- Provide security training focused on your specific technology stack
- Identify and support security champions in development teams
- Document security standards with clear, actionable guidance
From Stage 3 to Stage 4
- Implement a security metrics dashboard visible to leadership
- Define risk-based SLAs for vulnerability remediation
- Integrate threat modeling into architecture review processes
- Establish regular security posture reviews with business context
From Stage 4 to Stage 5
- Create systematic processes for evaluating new security practices
- Build feedback loops between production security events and development
- Integrate threat intelligence into proactive security decisions
- Enable security to accelerate deployment confidence, not just block risks
The Long Game
DevSecOps maturity is not achieved in a quarter or even a year. It requires sustained commitment from leadership, investment in tooling and training, and cultural change that takes time to root. But the organizations that make this investment gain a durable competitive advantage.
They ship faster because security confidence enables deployment velocity. They spend less on incident response because they catch issues earlier when they are cheaper to fix. They attract better talent because developers want to work in environments where security is a practice, not an obstacle.
The question is not whether your organization can afford to invest in DevSecOps maturity. It is whether you can afford not to.