What is DevSecOps?

DevSecOps is an operating model where security is continuously integrated — and automated — at every stage of the software development lifecycle, from design to production.

The key difference with legacy approaches: security is no longer a blocking gate at the end of the cycle (audit, pentest, CISO sign-off before go-live). It becomes a continuous property of the product, measured in real time, and shared between Dev, Ops and Sec teams.

The acronym itself carries the message: "Sec" sits in the middle of "Dev" and "Ops". It's not a third silo. It's a shared responsibility that diffuses into the other two.

The three terms are used interchangeably in many organizations. That's a mistake: they describe distinct operating models with different goals.

DevOps — velocity and reliability

DevOps aims to streamline the flow between development and production. Reference metrics: deployment frequency, lead time for changes, MTTR, change failure rate (the 4 DORA metrics).

DevSecOps — continuous integrated security

DevSecOps extends DevOps by embedding security practices: automated scans of code (SAST), dependencies (SCA), infrastructure-as-code, secrets and container images. The goal: security adds no friction to the dev/ops flow.

SecOps — operational threat response

SecOps is the SOC: incident detection, response, threat hunting. It's a runtime posture on production systems, not a build-time pipeline integration.

A mature DevSecOps program rests on three non-negotiable principles. Missing any of the three disqualifies the model.

1. 1Shift-left: security is integrated as early as possible in the cycle — at design, in the IDE, in the pull request — not at the end.
2. 2Automation: security controls run automatically through CI/CD, without systematic manual intervention. What cannot be automated is clearly identified and prioritized.
3. 3Shared responsibility: security is no longer exclusively the CISO's problem. Developers, ops, architects and product each have a clear, measurable share of ownership.

Beyond principles, a mature DevSecOps program is built around 5 operational pillars. This is exactly the model Cyber Coach instruments end to end.

1. 1Connect — ingest data from existing security tools (SAST, SCA, DAST, IaC, secrets, cloud, container). Normalize formats, deduplicate cross-tool duplicates.
2. 2Prioritize — score vulnerabilities in their real context (exploitability, exposure, business criticality), not just raw CVSS. Separate signal from noise.
3. 3Action — turn a prioritized vulnerability into a contextualized ticket in the tool each team uses (Jira, Linear, ServiceNow, GitHub/GitLab Issues), with two-way sync.
4. 4Measure maturity — objectively quantify where each team stands across the SAMM / DSOMM dimensions, based on real data rather than declarative questionnaires.
5. 5Remediate — speed up ticket closure with enriched context, fix recommendations, and, when relevant, an AI agent that opens a merge request for a human to review and merge.

On the tooling side, a modern DevSecOps program relies on several tool families, each covering a different attack surface.

• SAST (Static Application Security Testing) — source code analysis for application vulnerabilities.
• SCA (Software Composition Analysis) — analysis of open-source dependencies and their known CVEs.
• DAST (Dynamic Application Security Testing) — automated attack testing against a running application.
• IaC scanning — analysis of Terraform, CloudFormation and Kubernetes files for misconfigurations.
• Secrets scanning — detection of API keys, passwords and tokens accidentally committed.
• Container & image scanning — analysis of Docker images for CVEs in base layers.
• ASPM (Application Security Posture Management) — a consolidation, prioritization and orchestration layer above all the above.

Two frameworks serve as reference for measuring the maturity of a DevSecOps program: OWASP SAMM and DSOMM. Both define progressive levels, from ad-hoc to optimized.

1. 1Level 0 — Ad-hoc: no formalized practice. Security is handled case by case, based on audits and incidents.
2. 2Level 1 — Initial: automated controls exist on some pilot projects. Results are not consolidated.
3. 3Level 2 — Defined: practices are documented and applied across scope. Metrics exist but are collected manually.
4. 4Level 3 — Measured: metrics are collected automatically, tracked in real time, used to drive decisions.
5. 5Level 4 — Optimized: the organization uses its metrics to continuously improve its practices and tooling, and to benchmark teams.

According to OWASP, fewer than 15% of DevSecOps programs go beyond level 2. Most organizations believe they are at level 3 because they have dashboards — but those dashboards are fed by declarative questionnaires, not real data.

Most guides recommend "start by defining a security policy". In practice, this advice is useless for a mid-market org that already has 10 tools in place and no visibility over them.

Our pragmatic recommendation: start with a measured state-of-the-art, not a declarative one. Connect your existing tools to a consolidation platform, get an objective maturity score per team, identify the 3 most critical gaps, and fix them in priority.

1. 1Inventory tools already in place (you likely have more than you think).
2. 2Consolidate their results into a unified view.
3. 3Obtain an automated DSOMM / SAMM maturity score, per team.
4. 4Identify the 3 most critical gaps (often: prioritization, ticketing sync, MTTR measurement).
5. 5Fix these 3 gaps before even considering buying new tools.