Phase 7: Offline Deployment and Secure Model Packaging

Phase 7 delivers offline deployment capabilities with the DeploymentManager, artifact signing, secure model packaging, and security validation for air-gapped production environments.

Phase 7 transitions quantized models from the build pipeline into deployable, signed, and securely packaged artifacts suitable for offline and air-gapped environments. In this phase, you implement the DeploymentManager to orchestrate release workflows, add cryptographic artifact signing to guarantee provenance, and create secure model packaging that bundles weights, configuration, and metadata into tamper-evident containers. All deliverables are validated against the security requirements for offline deployment.

Purpose

The purpose of Phase 7 is to enable EMEP models to be deployed in environments without internet connectivity, where runtime verification and supply-chain security are critical. This phase closes the loop between model optimization and production operations by producing trustworthy, self-contained deployment packages.

Entry Criteria

Phase 7 begins when the following entry criteria are satisfied:

• Phase 6 (Quantization + Inference Optimization) is complete and produces validated quantized artifacts
• The ArtifactStore stores signed checksums for all artifacts
• Security requirements for offline deployment are documented and approved
• Target deployment environments are characterized (OS, hardware, network constraints)
• The InferenceBackend runs successfully in a network-isolated test environment

Exit Criteria

Phase 7 is complete when all exit criteria are met:

• The DeploymentManager can create, version, and publish deployment packages
• Every artifact is cryptographically signed at build time and signatures are verified at deployment time
• Secure model packaging produces tamper-evident bundles with embedded manifests
• The offline deployment workflow runs end-to-end without external network access
• Offline security validation passes, including signature verification and manifest integrity checks
• Secure model packaging meets enterprise audit requirements
• Rollback packages are pre-staged for the previous two releases

Primary Components

Component	Path	Role in Phase 7
DeploymentManager	/deployment/deployment-specification	Orchestrates packaging, signing, and release workflows
ArtifactStore	/tracking/artifact-registry	Stores signed artifacts and release bundles
InferenceBackend	/deployment/inference	Runtime included in deployment packages
ModelRegistry	/tracking/model-registry	Resolves model versions for packaging
Offline Security	/security/offline-security	Validates security controls in air-gapped settings
Secure Model Packaging	/enterprise/secure-model-packaging	Enterprise packaging standards and audit trails

Deliverables

The following deliverables are produced in Phase 7:

1. DeploymentManager: Automates the creation of deployment packages from quantized artifacts
2. Artifact signing: Cryptographic signatures using an offline-capable signing key infrastructure
3. Secure model packaging: Bundles containing model weights, inference runtime, configuration, and signed manifest
4. Offline deployment workflow: End-to-end process for installing and verifying packages without network access
5. Security validation suite: Automated checks for signature validity, manifest integrity, and package completeness
6. Rollback packages: Pre-built packages for the previous two releases to enable rapid reversion

Dependencies

Phase 7 depends on the completion of earlier phases and specific components:

• Phase 6: Requires quantized, validated artifacts as packaging input
• Phase 1: Requires the ModelRegistry to resolve exact versions
• Security framework: Requires defined signing key management and trust anchor policies
• Enterprise policies: Requires packaging standards from secure model packaging

Key Tasks

The detailed task breakdown for Phase 7 is maintained in the project task tracker. See Phase 7 Tasks for assigned owners, estimates, and current status.

Risks

The primary risks in Phase 7 include key compromise in offline signing infrastructure, package bloat exceeding transfer media limits, and signature verification failures on target systems with clock drift. These risks and their mitigations are documented in the Risk Register.

Quality Gate

Before Phase 7 can be marked complete, the following quality gate must pass:

• A deployment package is successfully installed and verified in an air-gapped environment
• Signature verification rejects a package with any modified file
• The package contains all runtime dependencies needed for the InferenceBackend
• Rollback to the previous release completes in under 10 minutes
• Security audit of the packaging pipeline finds no critical or high-severity issues

Position in Roadmap

Phase 7 is the final technical phase before enterprise piloting. It converts optimized and quantized models into secure, deployable artifacts that operations teams can install and trust in production environments.