Dry Development is the practice of avoiding repeated configuration by turning shared settings into reusable modules. In application security, it helps teams cut duplication, reduce maintenance work, and keep scan behavior consistent across many applications. The goal is simple operational reuse without losing control over how security rules are applied.
Expanded Definition
Dry Development is a reuse pattern for security configuration, not a new control by itself. It means expressing shared application security settings once and applying them consistently through modules, templates, or centralised rule packages so teams do not maintain near-identical copies across many codebases or environments.
The boundary that matters is between reusable structure and hidden coupling. Well-executed dry development keeps behaviour predictable while reducing drift, but overly abstracted modules can make exceptions harder to spot and local owners less able to explain what is actually enforced. In practice, the term is used most often where security scanning, build configuration, policy-as-code, or environment setup needs to remain identical across many applications.
Guidance-vs-consensus note: there is broad agreement that reuse improves maintainability, but teams still disagree on how centralised the shared layer should be. The operational question is not whether to reuse, but how much variation to permit before the shared module stops being transparent. For teams managing shared machine-facing controls, NHI Management Group recommends that the module boundary remain auditable and easy to override only through explicit approval.
Examples and Use Cases
Dry development appears wherever repeated security logic becomes hard to maintain by hand. Common examples include:
- One security scanning profile reused across many repositories so every application follows the same baseline checks.
- A shared configuration module that defines logging, timeout, or validation settings once and is imported by multiple services.
- Centralised policy-as-code that standardises control behaviour across development, test, and production environments.
- Reusable build or deployment templates that prevent each team from reinventing the same security defaults.
The practical tradeoff is control versus flexibility. Reuse reduces drift and maintenance effort, but if the shared module grows too broad, local teams may begin bypassing it for exceptional cases, which undermines the consistency the pattern is meant to create. That is why dry development is most effective when the shared layer is small, explicit, and versioned, rather than treated as an opaque internal framework.
Where the subject intersects with external assurance, the OWASP Non-Human Identity Top 10 is useful only as a nearby governance reference when reused configuration governs machine-facing access or credentials; it is not the primary subject of dry development itself.
Security Implications
Dry development can improve security posture when it removes configuration drift, but it also concentrates mistakes. If a shared module is misconfigured, every application that consumes it can inherit the same weakness at scale, turning a maintenance benefit into a broad exposure.
That failure mode is especially important in security scanning and policy enforcement. A weak default, a missed exception, or an outdated rule embedded in a common module can create false confidence across many systems at once. The visible symptom is often inconsistency between what teams believe is enforced and what is actually applied in runtime or build pipelines.
A common practitioner observation is that reuse only helps when owners can prove where the shared logic is used and how changes are tested before rollout. Without that visibility, the organisation may reduce duplication while increasing blast radius, because one change propagates everywhere without sufficient review.
Domain and Governance Relevance
Dry development matters in application security because it shapes how security behaviour is governed across an estate. It is not about a single control outcome, but about how consistently that outcome can be expressed and maintained over time.
For teams that operate shared security modules, the governance question is who owns the reusable layer, who can change it, and how exceptions are tracked. Those decisions affect auditability, change control, and the reliability of security baselines more than the syntax of the module itself.
Where Dry Development touches non-human identities or automated systems, the relevance is indirect but real: reusable security configuration often governs how service processes, pipelines, or agents authenticate and what they are allowed to do. In that case, the term affects trust boundaries because a single shared policy error can spread to many machine-operated workflows at once.
That is why NHI Management Group treats dry development as a governance pattern as much as an engineering one: the stronger the reuse, the more important the inventory of consumers, version control, and explicit approval for exceptions become.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
CIS Controls v8 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | 4 — Secure Configuration of Enterprise Assets and Software | Shared modules standardise configuration across many applications. |
| 8 — Audit Log Management | Central reuse often extends to logging and monitoring settings. | |
| Recommendation — Use CIS Control 4 to keep shared security modules versioned, approved, and consistently deployed. Use CIS Control 8 to ensure shared logging settings remain consistent and reviewable. | ||
| NIST CSF 2.0 | PR.IP-1 — Information Protection Processes and Procedures | Dry development supports repeatable, documented security procedures. |
| CM-2 — Baseline Configuration | Reusable modules function as baselines for repeated security settings. | |
| Recommendation — Apply PR.IP-1 to formalise reusable security configuration and keep changes controlled. Establish and maintain baseline configurations for shared security modules. | ||
