Static validation for declarative service orchestration: Enabling reliable CI/CD and MLOps pipelines
Konrad Horber, Stelios Sotiriadis · Future Generation Computer Systems · 2026
Declarative orchestration systems are fundamental to scaling MLOps, yet they predominantly rely on execution-time validation, creating a significant configuration-deployment feedback gap. In MLOps, this gap is particularly costly because machine learning pipelines often include compute-intensive training, data processing, and deployment stages where deterministic errors—such as missing artifacts or resource mismatches—may be detected only after remote execution has started. We introduce a four-layer static validation framework that intercepts these failures before any compute is provisioned. The framework integrates syntax parsing, schema compliance, dependency resolution, and execution graph analysis to provide a generalized validation approach for declarative systems. We instantiate the framework for GitHub Actions and evaluate it against 843 workflow configurations: 161 curated templates, 598 production workflows from top public repositories, and 84 MLOps workflows from 18 repositories. The approach achieves 88.5% recall on representative error patterns. While semantic validation achieves a lower 35%–37% recall due to the inherent opacity of custom scripts and runtime-dependent expressions, the framework maintains 100% precision on curated workflows, ensuring developer trust by minimizing false alarms. On a labeled 100-workflow real-world benchmark, head-to-head comparison with actionlint confirms distinctive strengths in registry-layer detection. Validation completes within seconds, offering an 89 × reduction in feedback latency. Under an explicit scenario model, our results indicate that this “fail-fast” approach can prevent 1.1% of total CI/CD executions, yielding an estimated $760,000 in annual infrastructure savings and a 4.2-ton reduction in C O 2 emissions for a mid-sized organization. This framework establishes a scalable, resource-efficient foundation for sustainable MLOps engineering.