Cybernetic Software Delivery: A Governed Lifecycle for Agentic Engineering Work
D. Brian Letort, Ph.D.
Digital Realty
April 9, 2026
Summary
This paper argues that the traditional SDLC cannot govern a world where AI agents produce engineering artifacts. Cybernetic Software Delivery (CSD) reframes delivery as a control system — a closed-loop model with humans, agents, tools, evaluations, and feedback. The primary unit of delivery becomes the governed run: a bounded, observable, policy-aware execution of delegated work that is fully reconstructable from storage. The paper introduces a nine-stage lifecycle, a five-category artifact taxonomy, 13 new metrics extending DORA, and a four-tier governance framework.
Why This Matters
As AI agents increasingly write code, generate tests, and produce documentation, engineering organizations need a new operating model. The traditional SDLC was designed for human developers working in sequential phases. CSD provides the governance, observability, and quality framework needed when agents are first-class producers. For engineering leaders, this is the missing operating manual for agentic software delivery — not just how to use AI tools, but how to govern the work they produce.
Key Contributions
- A lifecycle model with nine stages from intent through learning
- An artifact taxonomy covering specification, context, control, evidence, and outcome artifacts
- A metrics model extending DORA with thirteen CSD-specific measures
- A four-tier governance framework that rejects one-size-fits-all control
- Praxo-AgentOS — a reference implementation demonstrating feasibility in production-grade tooling
Who Should Read This
- Engineering leaders managing AI-assisted software delivery
- DevOps and platform engineers building agent infrastructure
- Researchers in software engineering processes and governance
- Compliance and governance teams adapting to agentic workflows
Related Writing
What This Points To Next
- Formal models for agent trust calibration in delivery systems
- Cross-organization governed run exchange and auditability
- Integration of CSD metrics into existing CI/CD observability
- Empirical validation of governance tier effectiveness